Random things happening to my computer is the problem my power supply?

[leenhia]

After I did a little upgrade to my main computer I'm getting problems and I'm leaning either toward my old power supply or video card.

Problems:
1. Random freezes in bios settings.
2. I can't install a fresh copy of window 8.1 it get stuck at the logo.
3. Monitor "sometimes" say no signal. When it does get a signal I can load my old installation Windows 8 with no problem.


New Parts:
Motherboard - MSI 970 Gaming
CPU - FX6300
Watercooling - H50
Case - NZXT S340
Fans - 3

Old Parts:
Power Supply: Thermaltake TR2 500W
GPU - GTX 560 ti (I took from one of my other computers)
Hard Drive - WD 500gb
RAM - 8gb G.Skill Sniper

What could be causing me all this problem? Help..

 

[hang-the-9]

Almost any part can cause those issues, not just the power supply or video card. You need to start going through the parts and testing them either in a known good system, or use known good parts in yours to rule out the issue. I would start with the power supply first like you though. Also test the RAM if it's multiple sticks, one stick at a time. Run memtest and a hard drive check utility with a boot disk like Hiren's or Ultimate Boot CD.