What have i done to my PC?

[bessex97]

My PC was overheating and was coated in dust inside the case which covered most components so i bought some compressed air and cleaned the inside. I was holding a vacuum nearby where i was using the compressed air to suck up the dust but i must have got to close to something because upon turning back on my PC windows attempted start-up repairs and it took over an hour to fix disk repairs. After it did that windows kept doing the same thing and i was stuck in repair disk errors loop. The only screen i could get to was the windows recovery environment where you have all the options such as Reset PC, CMD, etc... i couldn't even reset this pc as that ran into errors also. Anyway i tried running many things through CMD and eventually i was able to log into windows 10 and view my desktop but it was VERY VERY slow.

So i tried to re-install windows through booting from USB and CD but everything got worse, i could no longer boot windows or even boot from USB or CD. Eventually i was able to boot to USB after changing boot priority in the BIOS and moving HDD to the bottom of the boot list.

Long story cut short, after many hours and errors i was able to reset pc using windows 8 disk and install windows 8. However it's still very slow to boot up windows but maybe about 10 minutes after it's on it seems fine but i can't access my user folder on windows like documents or downloads it says unreadable or corrupt but can access program files etc on same hard drive?

Is it the hard drive causing these issues? Or is it something else? If you want any more details please just ask

 

[RememberThe5th]

Re-plug every cable.
Then clear CMOS, Switch psu off, then unplug from wall, remove shiny battery from motherboard, switch psu on, press and hold power button for 30s~, then plug back battery, swotch psu off, plug it into power switch it on and check if it fixed.

Probably if you have carpet and you were in socks you could done an ESD shock to system.

Or when you did cleaning you didnt stop fans from spinning as they can generate voltage ( at higher speeds).

 

[bessex97]

Re-plug every cable.
Then clear CMOS, Switch psu off, then unplug from wall, remove shiny battery from motherboard, switch psu on, press and hold power button for 30s~, then plug back battery, swotch psu off, plug it into power switch it on and check if it fixed.

Probably if you have carpet and you were in socks you could done an ESD shock to system.

Or when you did cleaning you didnt stop fans from spinning as they can generate voltage ( at higher speeds).

Do I leave the power cable plugged in when doing this or completely disconnect it? Also my PC still turns on but just 90% of the time fails to boot windows? Is this just a fault hard drive?

Also I the PC was placed on the carpet while cleaning it and I was wearing socks... I now massively realise my mistakes.

 

[CountMike]

Disconnect from power completely every time you open the case, never do anything inside with power connected.