Windows 7: need help fixing my computer (long post)

CPU: Intel Core i3 CPU 530 @ 2.93GHz
Monitor(s)/Displays: Okano 55" Full HD LCD TV – 1920 X 1080 Resolution
RAM: Corsair 2x 2048 MBytes DDR3 1333
Motherboard: ASUS P7H55-V
Graphics Card: NVIDIA GeForce 9400 GT 1024mb
Sound Card: C-Media PCI Audio 5.1 Surround Sound
Network Adapter: TP-Link 150Mbps Wireless Lite-N Adapter
Hard Drive: Seagate ST31000528AS 1TB
Hard Drive: Western Digital – WD10EADS-00M2B0 1TB
Optical Drive/s: Sony Optiarc DVD RW AD-7240S (x2)
Keyboard: Razer BlackWidow Ultimate Mechanical Keyboard
Mouse: Razer Naga Epic MMOG Wireless Gaming Mouse
Power Supply: Seasonic X-850 80Plus Gold 850W
Software: Microsoft Windows 7 pro 32bit with SP1
Keyboard: Logitech G19 Keyboard
Mouse: Logitech Wireless Gaming Mouse G700
Hi all,
a few days ago, i moved my computer into my lounge room, and it was the first time i have turned it off in
about a week and a half, when i tried to turn it back on after plugging everything back in
my GPU wasnt working, as in, my sceen was not loading, at this point i thought "oh crap."
so i took the card out and plugged my screen into the onboard port, and started it up,
and it just hung there as if frozen, at the initial flash screen, i did a hard reset, and it started up
and got to the loading windows screen and froze again, another hard reset, this time it came up and said windows
is loading files.. froze again, turned it off went nuts and came back after a few hours.
so i opened the case again, and this time unplugged both the HDD's and both optical drives took out the wireless
adapter and took out the ram, kept the monitor plugged in only, and started it up, and as expected it just kept
beeping coz of no ram, so i put them back in, 1 at a time, to see if they were faulty, both worked fine so i put them both in.
then i started it up and thought i would go into the bios and just have a look, so the pc starts and i press
"Del"..... nothing happens, so i turn it off, unplug the power, and removed the cmos batt for a few mins and
then replaced it, i started it up and it loads to a screen where i can select to go into bios or load default values,
i hit F2 to go into bios, the bios screen comes up, but i can not do anything, it seems to be completely frozen, even the system time is not moving "oh crap" turned pc off, installed main HDD and 1 optical drive, restarted, froze again
at windows start, so i had to reset cmos again (have to do this every time now) start up, and put in the windows 7 disk, this time it takes about 20 mins, but it loads the system repair... it attemts to repair the system, but always comes up that the service or something is turned off, and a send dont send thing appears, i click dont send, then click finish, restart.
windows loads!!!! sorta
the task bar loads then the whole pc freezes again, so i turn it off, (emo rage and go to bed)
the next day, i took everything out of my case, and used a can of compressed air to try and clean everything then
i repeat most of the above stuff, and windows actually loads, no freezing or anything.
(still had to reset cmos and still cannot enter bios)
so with windows up, i made sure all services that needed to be on were on, i ran virus scans, defragged etc etc
at this point i am noticing that thumbnails are not loading at all, and some of my icons are missing for folders and files, but as windows is actually running, its only a minor thing
fast forward, and i need to restart to plug my wireless adaptor back in (for some reason the onboard lan was not being detected)
so i shutdown windows normaly and plug the wireless back in again... then i have to repeat 90% of the above steps and with a lot of trial and error and reseting and screaming like a madman, i finally get windows back up
and now i can access the net "WOOT!!!"
After searching for hours on end, and reading anything i can find even remotely related to what im going through, i read on some obscure page, that i may need to "FLASH" my bios, so i have read up on this, but i still dont really want to do it unless i can get a step by step walk through of how to do it
(if anyone has read this far, and is wondering why i have not taken my pc to a store to fix, i am broke, and on the dole, so paying someone lots of money aint really an option right now)
fast foward another day, and now i have my graphics card back in my pc, and its working, and i had to do all that crap again, and now i am typing all of this out
if i can, i will try to load pictures from my phone onto the net, so that you may be able to see pictures of some of the problems
but right now, i am out of idea's and i really dont want to have to turn my pc off again and have to spend 2 hours getting back into windows
So here is what i need
HELP!?!?

Right going for a cup tea.

Check all Power Cables.

Phew! Two sugars for me please!

just made a cup of tea, any other suggestions other than checking the cables

have also run memtest86, spinrite on the OS Drive, Tried booting with no USB Devices, am using PS2 keyboard and mouse, am trying to get a live linux CD, and have tried another PSU and it still does it

Hi fimble

No sugar for me, I am too sweet.

Hi steel865

You could reset the CPU.

ok, just to clarify, do you mean take it out of the pc, and then put it back in, or something else, coz if it is what i think, then i did that earlier

any other help anyone can give me?

Wow, you've done a lot of trouble shooting already, the only thing I can see that you can try is borrow or use a spare PSU if you have one and see if that is the problem.

The BIOS issue is troubling to say the last.

May be a short somewhere, check everything, and that all cables are securely plugged in.
If still no boot...

Next step, bench test.
Remove everything, put the motherboard on a static bag on the table or bench.
Plug in one component at a time and check the beep codes, they should be in your mobo manual.

Let us know the progress.

This seems to be a few months old but I'd like to put my input if other people are having the same problem. The problem lies in the Razer Naga Epic mouse. When it is plugged in it will hang at POST for a long time, but when you turn the computer on without the mouse plugged in, it will boot normally. The problem "should" be fixed if you disable USB boot or move your HDD higher up on the boot priority list. This however did not fix it for me so I'm still looking for an answer, but what myself and a coworker believe is that the computer is checking the memory in the mouse to see if it can boot from the memory in the mouse and just hangs there because it doesn't know what to do. I'm about to send a message to the Razer support team to see if they have an answer, if I find out I will post it here.