I had buy a new Dell inspiron 1521 laptop last year. All was working fine, but one day I face a problem in booting at startup. It just says enter a microsoft disc, but I don’t have that disc, I don’t know anything about that disc. I had tried to reboot my system again and again, I also unplugged and plugged my system many times but nothing has happened .I think my windows have been corrupted, From where I can found that disc, please help me .
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