How many amps does a modern gaming computer use on +3.3v and +5v, and is too much a bad thing?

When my computer doesn't boot normally, I have counted 8 short beeps, then the regular post beep, I have no idea what that means because I don't see beep codes in my motherboards manual (even the online version).

As far a stability goes, Computer A and B are both running Windows 10 Pro, but computer A freezes, and glitches, and restarts Windows Explorer a whole lot more than Computer B. In fact I don't even remember the last time Computer B restarted Windows Explorer . However, It should be noted that besides the standard web browsers (Chrome 64-Bit, Firefox 64-Bit, and Opera), and CCleaner, Computer B only has Windows Store Universal Apps installed. Also, I use computer A much, much more than Computer B.

I have lost an Intel 180 GB 520 Series SSD from computer A, as well as a priceless LG HD-DVD/Blu-Ray Burner (which had the same strange continuous LED blinking, and back and forth seeking before it died) from it as well, so not wanting to lose anymore hardware from a highly unstable system, I wanted to make sure every component had sufficient power, and the PSU wasn't dying, and the data cables were both high-quality, and secure. Both computers, at one time, had 3.5" USB 3.0 card readers much like this one, but of a more generic brand, attached internally to UTechSmart 7-port USB 3.0 PCI-E Card that I plugged the power adapter into, and computer B fried a chip in it's card reader, before I realized that something was amiss.

So, at this point, I'm just really concerned about the future of these systems, with the instability, component loss, and all.

Any help would be greatly appreciated!

About wanting a 1000 watt PSU:

I would much rather have a powerful future-proof expensive PSU with room to grow, and room to breathe, than have to replace it in another build, or upgrade, down the road when my PC requirements go up.
Also, I have heard that Crysis 3 maxed out will cook a modern PC to pieces, so being a very active Steam member, I'm just trying to make my PC stand up against, not only Crysis 3 (with ease, and at low temps when I get my GeForce GTX 1080), but also future games of, and exceeding, it's graphical caliber. I figured, with the amount of horsepower coming out of the GTX 1080, it will need quite a bit of juice, and having some breathing room for the PSU, after this upgrade will extend it's overall lifespan, and performance, not to mention assure me that my problem (above) is not with the PSU.

I'm just trying to use PoE, to determine where the problem lies, and given the variety of the types of components I've lost on Computer A, the PSU aroused suspicion as the first part on the list to check off.

Bump-ity, bump-ity, bump!