Not sure how to diag this

[Chris Bryant]

My kids knocked the old PC off the entertainment center. now, the cpu fan stays on full blast at all times, its slowly gotten worse over the last few months of just not wanting to function well. It starts up after a long time, barely wants to do anything once it gets past the log in screen. start Netflix or any program and it just takes 30 years to get to the next section. I have the entire case apart. my graphics obviously work, and it's onboard system. How can I figure out what I need to replace to get it working again? 

 

Intel i3-4130T Dual-Core processor 2.9 ghz

NVidia GForce GTX 750ti

16GB 1600hz ddr3 ram

500gb hdd

3V3TG Dell Alienware Alpha Intel Desktop Motherboard s1156

[kelvinhall05]

HDD is fucked. Buy a cheap 120GB SSD and throw it in. You might also want to check that the cooler is still mounted well, but that's just an extra precaution.

[Chris Bryant]

that's what I was thinking but I wasn't sure if the cpu might be having an issue computing. fan is mounted fine but question there, is the fan messed up or is it reading some process that the cpu is too hot when it isn't?

[zombienerd]

1 minute ago, Chris Bryant said:

that's what I was thinking but I wasn't sure if the cpu might be having an issue computing. fan is mounted fine but question there, is the fan messed up or is it reading some process that the cpu is too hot when it isn't?

Judging by the age, your thermal paste was probably dried, and the fall probably cracked it, causing it to lose good thermal contact.  

 

Remove the cooler, and replace the thermal paste.

[Chris Bryant]

alright, thank you very much

[imreloadin]

24 minutes ago, zombienerd said:

Judging by the age, your thermal paste was probably dried, and the fall probably cracked it, causing it to lose good thermal contact.  

 

Remove the cooler, and replace the thermal paste.

Came here to say the same thing, the impact probably unseated the cooler ever so slightly which the fan running at 100% would be indicative of. The thermal throttling caused by the CPU overheating would also cause performance issues as well which also sounds like your issue.

[mariushm]

Yeah, i'd say heatsink is loose or plastic holding heatsink broke.

CPU gets hot so fan spins fast but no/minimal contact between cpu and heatsink so cpu remains hot

[Chris Bryant]

I've removed and reapplied proper thermal paste, replaced to ssd, fan still running max and cpu temp says staying around ?47 c I think it was. my problem now though on the drive, how can I swap the OS/BIOs. won't start without it, but it only has one drive, so I can just send it over. tried taking old drive to another computer, but trustedinstaller won't let me copy the whole thing... I've already lost most of my hair, i'm about ready to scalp myself.

 

Edit: after a bit of time sitting powered on, fan functioning properly now. only issue still needing to port operating system