{"id":2459,"date":"2023-10-12T14:01:51","date_gmt":"2023-10-12T12:01:51","guid":{"rendered":"https:\/\/smaaart.fr\/blog\/?p=2459"},"modified":"2026-05-07T10:26:26","modified_gmt":"2026-05-07T08:26:26","slug":"pourquoi-ordinateur-lent","status":"publish","type":"post","link":"https:\/\/smaaart.fr\/blog\/pourquoi-ordinateur-lent\/","title":{"rendered":"Comment trouver ce qui ralentit mon PC ?"},"content":{"rendered":"\n<p><strong>L&rsquo;ordinateur <\/strong>est un outil indispensable quotidiennement mais au fil du temps, il peut montrer des signes de fatigue avec des <strong>ralentissements<\/strong>. Alors, beaucoup se demandent comment savoir ce qui <strong>ralentit le PC<\/strong> \u00e0 ces diff\u00e9rentes \u00e9tapes ? Et pour quelles raisons un <strong>ordinateur neuf peut \u00eatre lent<\/strong>&nbsp;?<\/p>\n\n\n\n<p><strong>Plusieurs causes<\/strong> peuvent engendrer un ralentissement du PC \u00e0 diff\u00e9rentes \u00e9tapes : en g\u00e9n\u00e9ral, au <strong>d\u00e9marrage <\/strong>ou lors de la <strong>navigation <\/strong>sur internet. Dans cet article, nous allons explorer ces raisons et vous donner quelques astuces pour identifier et r\u00e9soudre ces soucis de performance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Quelles sont les causes de la lenteur d&rsquo;un ordinateur\u200b ?<\/strong><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"834\" src=\"https:\/\/smaaart.fr\/blog\/wp-content\/uploads\/2023\/10\/1-1024x834.jpg\" alt=\"Causes d'un ordinateur lent\" class=\"wp-image-2467\" style=\"width:472px;height:384px\" srcset=\"https:\/\/smaaart.fr\/blog\/wp-content\/uploads\/2023\/10\/1-1024x834.jpg 1024w, https:\/\/smaaart.fr\/blog\/wp-content\/uploads\/2023\/10\/1-300x244.jpg 300w, https:\/\/smaaart.fr\/blog\/wp-content\/uploads\/2023\/10\/1-768x625.jpg 768w, https:\/\/smaaart.fr\/blog\/wp-content\/uploads\/2023\/10\/1-1536x1250.jpg 1536w, https:\/\/smaaart.fr\/blog\/wp-content\/uploads\/2023\/10\/1-2048x1667.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p>On se demande souvent, <strong>qu&rsquo;est-ce qui provoque la lenteur d&rsquo;un ordinateur ?<\/strong> Voici les causes globales qui peuvent engendrer un ralentissement du PC :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Disque dur plein<\/li>\n<\/ul>\n\n\n\n<p>Un <strong>disque dur satur\u00e9<\/strong> impacte directement la <strong>vitesse <\/strong>de votre ordinateur. Lorsque le disque dur est proche de sa capacit\u00e9 maximale, le syst\u00e8me d&rsquo;exploitation cherche difficilement de l&rsquo;espace pour stocker les fichiers temporaires n\u00e9cessaires \u00e0 son bon fonctionnement.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pas assez de RAM<\/li>\n<\/ul>\n\n\n\n<p>La m\u00e9moire vive (RAM) est l&rsquo;endroit o\u00f9 votre ordinateur stocke temporairement les donn\u00e9es dont il a besoin pour fonctionner. Une <strong>faible capacit\u00e9<\/strong> de RAM ou <strong>trop d&rsquo;applications<\/strong> causent des <strong>ralentissements<\/strong>. <a href=\"https:\/\/smaaart.fr\/blog\/augmenter-vitesse-pc\/\">Augmenter la RAM du PC<\/a> permettra donc d&rsquo;am\u00e9liorer la vitesse de l&rsquo;appareil.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mises \u00e0 jour \u00e0 faire<\/li>\n<\/ul>\n\n\n\n<p>Les <strong>mises \u00e0 jour<\/strong> syst\u00e8me sont essentielles pour la s\u00e9curit\u00e9, la correction des bugs et l\u2019optimisation des performances. Ne pas les installer peut rendre votre ordinateur <strong>vuln\u00e9rable aux attaques<\/strong> et <strong>moins performant.<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>L&rsquo;\u00e2ge de l&rsquo;ordinateur et son entretien<\/li>\n<\/ul>\n\n\n\n<p>Avec le temps, les composants mat\u00e9riels peuvent s&rsquo;<strong>user<\/strong> et ne plus \u00eatre aussi <strong>efficaces <\/strong>qu&rsquo;auparavant. De plus, l&rsquo;absence d&rsquo;<strong>entretien r\u00e9gulier<\/strong>, comme le <strong>nettoyage <\/strong>des ventilateurs, peut entra\u00eener une surchauffe et ainsi diminuer les performances.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fichiers temporaires \/ volumineux \/ ind\u00e9sirables \/ fragment\u00e9s qui prennent de la place<\/li>\n<\/ul>\n\n\n\n<p>Avec l&rsquo;utilisation, de nombreux fichiers temporaires et ind\u00e9sirables peuvent s&rsquo;accumuler sur votre disque dur et cr\u00e9er des <strong>ralentissements <\/strong>et des <strong>baisses de performances<\/strong>. De plus, la fragmentation des fichiers peut \u00e9galement entra\u00eener des ralentissements.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Pourquoi mon ordinateur rame quand je vais sur internet\u200b ?<\/strong><\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/smaaart.fr\/blog\/wp-content\/uploads\/2023\/10\/software-update-computer-modish-version-device-software-upgrade-1024x683.jpg\" alt=\"Ordinateur lent sur internet\" class=\"wp-image-2468\" style=\"width:473px;height:315px\" srcset=\"https:\/\/smaaart.fr\/blog\/wp-content\/uploads\/2023\/10\/software-update-computer-modish-version-device-software-upgrade-1024x683.jpg 1024w, https:\/\/smaaart.fr\/blog\/wp-content\/uploads\/2023\/10\/software-update-computer-modish-version-device-software-upgrade-300x200.jpg 300w, https:\/\/smaaart.fr\/blog\/wp-content\/uploads\/2023\/10\/software-update-computer-modish-version-device-software-upgrade-768x512.jpg 768w, https:\/\/smaaart.fr\/blog\/wp-content\/uploads\/2023\/10\/software-update-computer-modish-version-device-software-upgrade-1536x1025.jpg 1536w, https:\/\/smaaart.fr\/blog\/wp-content\/uploads\/2023\/10\/software-update-computer-modish-version-device-software-upgrade-2048x1366.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>Logiciels espions et virus informatiques<\/li>\n<\/ul>\n\n\n\n<p>Votre ordinateur est expos\u00e9 \u00e0 diverses menaces lors des navigations sur internet. Ces programmes malveillants peuvent <strong>compromettre <\/strong>votre <strong>s\u00e9curit\u00e9 <\/strong>et votre <strong>vie priv\u00e9e<\/strong>, mais aussi consommer une grande partie de vos ressources syst\u00e8me. Cela engendre une <strong>navigation lente <\/strong>et <strong>laborieuse<\/strong>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Modules compl\u00e9mentaires du navigateur trop importants<\/li>\n<\/ul>\n\n\n\n<p>Les <strong>modules compl\u00e9mentaires<\/strong> enrichissent votre exp\u00e9rience de navigation mais certains d\u2019entre eux peuvent n\u00e9cessiter beaucoup de <strong>ressources <\/strong>et donc <strong>ralentir votre PC<\/strong>. Ce ralentissement est plus fr\u00e9quent lorsqu\u2019ils sont nombreux.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Saturation du r\u00e9seau local<\/li>\n<\/ul>\n\n\n\n<p>Si plusieurs appareils sont connect\u00e9s \u00e0 votre r\u00e9seau local (Wi-Fi ou Ethernet) et consomment une grande partie de la bande passante cela peut <strong>affecter la vitesse<\/strong> de votre <strong>connexion internet<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Pourquoi mon ordinateur est lent alors qu&rsquo;il est neuf\u200b ?<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Trop de logiciels pr\u00e9install\u00e9s<\/li>\n<\/ul>\n\n\n\n<p>Lorsque vous achetez un <strong>ordinateur neuf<\/strong>, surtout d&rsquo;une marque grand public, il est fr\u00e9quent que de nombreux <strong>logiciels<\/strong> soient <strong>d\u00e9j\u00e0 install\u00e9s<\/strong>. Ces logiciels peuvent \u00eatre des versions d&rsquo;essai, des outils de marque ou des applications promotionnelles dont vous n&rsquo;avez pas n\u00e9cessairement besoin.<\/p>\n\n\n\n<p>Ces logiciels peuvent <strong>consommer <\/strong>une partie significative des <strong>ressources <\/strong>de votre ordinateur, notamment au <strong>d\u00e9marrage<\/strong>, rendant ainsi votre <strong>exp\u00e9rience moins fluide<\/strong>. D\u00e9couvrez notre article pour savoir <a href=\"https:\/\/smaaart.fr\/blog\/accelerer-pc-lent-demarrage\/\">comment acc\u00e9l\u00e9rer un pc lent au d\u00e9marrage<\/a>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Un ordinateur reconditionn\u00e9 n&rsquo;est pas plus lent qu&rsquo;un neuf<\/li>\n<\/ul>\n\n\n\n<p>Il existe un mythe selon lequel un <a href=\"https:\/\/smaaart.fr\/blog\/ordinateurs-reconditionnes\/\">ordinateur reconditionn\u00e9<\/a> serait <strong>plus lent<\/strong> qu&rsquo;un ordinateur neuf. En r\u00e9alit\u00e9, un <a href=\"https:\/\/smaaart.fr\/332-ordinateurs-reconditionnes\">PC reconditionn\u00e9<\/a> subi un processus de reconditionnement <strong>pouss\u00e9 <\/strong>afin <strong>d\u2019identifier <\/strong>et <strong>remplacer <\/strong>les composants d\u00e9fectueux. Un processus qui permet de <strong>prolonger la dur\u00e9e de vie<\/strong> des appareils. Les PC portables reconditionn\u00e9s sont test\u00e9s afin de garantir un <strong>\u00e9tat fonctionnel \u00e0 100%<\/strong>.<\/p>\n\n\n\n<p>Si un <strong>ordinateur reconditionn\u00e9<\/strong> pr\u00e9sente des signes de <strong>lenteur<\/strong>, ce n&rsquo;est g\u00e9n\u00e9ralement pas d\u00fb au fait qu&rsquo;il a \u00e9t\u00e9 reconditionn\u00e9, mais plut\u00f4t pour les <strong>m\u00eames raisons<\/strong> que tout autre ordinateur (logiciels pr\u00e9install\u00e9s, param\u00e8tres non optimis\u00e9s, etc.).<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Votre PC portable est lent s\u00fbrement pour l\u2019une de ces raisons, cit\u00e9es pr\u00e9c\u00e9demment. La bonne nouvelle c\u2019est que nous pouvons vous aider \u00e0 r\u00e9soudre le probl\u00e8me&nbsp;! Il vous suffit de consulter notre article \u00e9voquant <a href=\"https:\/\/smaaart.fr\/blog\/pc-lent\/\">toutes les solutions sur comment acc\u00e9l\u00e9rer un ordinateur lent<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&rsquo;ordinateur est un outil indispensable quotidiennement mais au fil du temps, il peut montrer des signes de fatigue avec des ralentissements. Alors, beaucoup se&#8230;<\/p>\n","protected":false},"author":15,"featured_media":2465,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[595],"tags":[537,134,538,527,484,539],"class_list":["post-2459","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astuces","tag-firefox","tag-france","tag-google","tag-microsoft","tag-pc-portable","tag-ram"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Pourquoi mon ordinateur est-il lent ? - SMAAART<\/title>\n<meta name=\"description\" content=\"Pourquoi mon ordinateur est-il lent ? 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