overclocking and psu problem need advice?

Im having a problem i have my phenom 9850 BE oc@ 2.8 i can def push it past this.But before and after the overclock my computer would need to be turned on and off numerous times for the screen to show.Now when i change my clocks and restart its not changing the clocks and is ressetting back to defaults.I do know my dorm has power problems because we cant have air conditiong units and stuff as they said the power is weak or soemthing.I think its my PSU which is 700w..i thought it was 800w for some reason.but 700 watts for alot of things in the case including sli 8800 ultra OC.Here is my system specs i just ordered a 1000W EliteXstream OCZ PSU.You think thats the problem tho here are my system specs..

Dan’s System (pics below)
Case: ANTEC 900 Ultimate case w/ custom Watercooling
9 Bays
5 X 120mm fan
2 of them above 90 CFM controlled by back pci slot fan controller so my rig doesn’t sound like vaccum
1 “Big Boy” Exhaust fan 240mm

Motherboard: ASUS M3N-HD/HDMI with Hybrid/ OC / SLi Direct x10

CPU: AMD Phenom quad-core 9850 BE OC @ 2.8 /water

GPU: 2X SLi XFX 8800 ultra OC @ XFX 8800 ultra XXX edition clocks

RAM: 8 GB “Fatality” Extreme performance RAM w/ heat sinks
Cooled by OCZ dual 60mm fan Ram cooler

HD:Seagate Barracuda 7200.11 SATA II 500-GB Hard Drive 32 MB cache

800w-->actually a 700W OCZ SLi ready power supply

Saitek Cyborg Multi LED Programmable Keyboard

Razor “Lachesis” 4000 dpi mouse

Samsung “TOC” 22inch 2ms 20000:1 ratio monitor

Logitech 550W Z-5500 THX surround system w/THX Digital Monster optical

*Custom Watercooling system*
Thermaltake Bigwater 760IS “Key 3 Spirit Edition” ALL-IN-ONE

2nd radiator is Feser X-changer extreme performance 120 mm radiator *Best in class*with performance fan shroud and 120mm turbine fan 90 cfm (Dual noise reduction pads)

2X 8800 Ultra Hydra Water cooling GPU and GPU memory blocks with internal combo fan

How the loop goes....

Bigwater pumps Feser X coolant from internal reservoir to Thermaltake’s slim design all copper water block to the Feser X radiator then to 8800 Hydra waterblock then to the second Hyrda block back into the Bigwater’s system radiator and back out again.
thanks for your help

thanks guys