PC takes extremely long time to boot.

[Arjahn]

Lately my PC has been taking 10+ minutes to boot and occasionally BSOD's when I put it to sleep. Any idea what might be causing this? I dusted it out a few weeks ago, and I've done several malware scans and found nothing. 

[CosmykTheDolfyn]

Try partitioning your hard drive into multiple drives. Your main drive should only include data needed for windows to work, while the second can include all your games, downloads,music, eetc. This means your computer only has to look through a little data to boot up and it should go faster during that function.

[Petie]

I have a few preliminary questions:

1. How old is the computer?
   
2. What OS is it running?
   
3. How often is it restarted?
   
4. When did this start?
   
5. Do you have a record of the blue screen stop code or error message? My assumption is a graphics driver issue but I'd like to be sure.
   

What Cosmyk suggested won't actually have any direct effect on your performance though to do so, you'd need to wipe the drive and reinstall Windows which almost definitely would fix your problem. But, unless you're comfortable with that process, I'd consider it a last resort. In practice, moving things like game installs to a second drive is only practical when your system drive is solid state.

As I said in question 5, it sounds like this might be related to your video driver so my first suggestion is to make sure that's up to date, though I'm not too sure if/how that could affect boot time. Still, couldn't hurt to update it though.