Pink/Purple/White Screen XFX R9 280x

This is going to be a pretty long explanation, but PLEASE stick with me. If nothing else, read the summary at the bottom.

So I've had this custom build for over a year and a half now, with no problems. I have upgraded the GPU and PSU about 2 or 3 months ago, and it's still been working like a charm since then - until now.

Today I decided to open MSI Afterburner to mess around with the settings (I now know I should never have done that in the first place). I made the stupid decision to increase the clock speeds of both my RAM and GPU as high as they would go, and I set the fan to adjust accordingly. I will now slap myself in the face infinitely for this.

I applied the settings, and boom. Immediately a pink screen appears across my monitor. It was sort of a washed-out pink with vertical bluish-grey bars.

I restarted my PC, and went back to afterburner. I now set the clock speeds of my RAM and GPU as low as possible. It seemed to work fine when I applied it, until I opened up chrome. A few seconds after I did, it crashed again with the same pink screen.

I did another hard reset. I booted up in safe mode this time. I went to afterburner and discovered the clock settings were locked on the lowest possible. I closed that, and went to control panel. I performed a system restore. It restored back to a windows update that took place 2 days ago. It restored successfully. However, After a few mins it crashed again - this time with a washed-out purple color and the same vertical bars.

I did another hard reset, and booted in safe mode again. Opened some stuff, crashed with the purple screen again.

One hard reset later, I booted in normal mode. I opened chrome so that I could try using a previous amd driver (I believe Ive been using the 15.4 beta amd driver for about a month now with no problems. I originally updated to this driver to fix lag issues in gta 5). I ended up crashing before I could install a previous driver. This time it was a completely white screen, no vertical bars.

I've tried a couple more times to install previous drivers, but I can never get to the download before crashing with either a pink, purple, or white screen. It crashes after approximately 2 mins each time. I'm having my doubts about it being a driver problem in the first place, since I've been using it for at least a month now.

I'm thinking it must be a clocking problem. But ever since I did the system restore, now I can't open MSI afterburner. It gives me the error message: "some of MSI afterburner components are expired, missing, or corrupted!"

Please help me, I don't know what to do ;-;

**SUMMARY**
After overclocking my GPU and RAM as high as possible with MSI Afterburner (dumb mistake), it crashed with a pink screen. Now every time I boot up my PC in either safe or normal mode, 2 mins later it crashes and shows just a pink, purple, or white screen. The only way to get back to the desktop is to perform a hard reset. I was able to set my clock speeds all the way down once, although now I can't open afterburner and I don't know if its at the default clock speed or lowest clock speed when I boot up my PC. Either way, something is very wrong here. I literally only have 40 bucks, so getting new parts is not an option. PLEASE help me, you're my only hope ;-;

**SPECS**
XFX R9 280x GPU
MSI 970A-G43 MOBO
Thermaltake Toughpower 750w Gold PSU
Corsair XMS3 8gb (2x4gb sticks) RAM
AMD FX-6100 6 core CPU (stock cooler)
Windows 7

Thank you so much for reading!