Troubleshooting 101:
1) Before working on a problem with any computer back up important files you want saved on another device such as a external hd or a thumb drive(s). Pictures, resumes etc etc
2) CHECK TO MAKE SURE EVERYTHING IS PLUGGED IN RIGHT AND THAT THERE ARE NO SHORTAGES OR MISSING CONNECTORS THAT MAY HAVE BROKEN OFF! This may seem herpderp but this is one of the most overlooked things when troubleshooting something like this. There was a News Station (could've been my local one lol) that purposely loosened the seta cable to the hd and they went into like 3 different stores: Fry's, Best Buy (Geek Squad) and a privately owned PC repair shop saying the computer wouldn't boot up.
- Fry's found the problem in 3 hours (waiting time)
- PC repair found the problem in 2 minutes
- Best Buy (Geek Squad) didn't even open the computer! They plugged it in, didn't start and said the hd was fried and tried to up-sell the person a whole new computer! Talk about herpderp lol
3) If your computer "crashes" listen to see if the psu (power supply unit) shuts off first or if the hd turns off or if the hd is skipping. If it's the psu then it's probably dying but if the hd then it's going bad as well if it's skipping, sounds like Nascar vroooom...... vroooom.
4) If you can't tell then here's a trick I learned at ITT-Tech:
- Unplug and take your psu out of the case along with any wires connected to the psu.
- Unbend a paperclip into a U
- Stick one of the paper clip ends into a BLACK connector on the mb cable and stick the other end into a GREEN connector. This makes a circuit.
- Plug in your psu to the wall (DO NOT TOUCH THE PAPERCLIP OR WIRES) and let it run and see if it stops/ dies around the usual time your comp crashes.
- If it's not the psu then put your hd into another computer and see if it crashes. If so then you have a bad hd.
When all else fails... take it into a PC repair store.