PC doesnt boot. Please help

well last week i bought a whole system from newegg, put it together put xp pro x64 on it everything ran well for two days. sat night put it to sleep and go to sleep sun morning come to wake it up and its just flickering.
all fans are on including cpu, case, and video card fan. mobo led is on both dvd-roms are flashing and sounding like they are trying to open but dont open and dont respond. so here what i already tried/checked
everything is connected(triple checked), tried taking out vide and running on onboard, taking all drives off, jumpers and removing battery and still nothing, by that i mean everything seems to power on but there are not a single beep, it doesnt even go to the bios or anything monitor just stays off in a sleep mode. by the wawy checked monitor also. which brings me to the question is it my mobo thats fried or the cpu? any help would be greatly appreciated.

Western Digital Caviar Green WD6400AACS 640GB 7200 RPM SATA 3.0Gb/s 3.5" Hard Drive
OCZ 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory Model
AMD Phenom II X4 920 2.8GHz Socket AM2+ 125W
LOGISYS Computer PS575XBK 575W ATX12V SLI Ready Power Supply
SAPPHIRE 100265HDMI Radeon HD 4830 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card
ASUS M3A76-CM AM2+/AM2 AMD 760G uATX AMD Motherboard
XCLIO Godspeed One Advanced Fully Black Finish 0.5 mm SECC / ABS Plastic ATX Mid Tower
11 answers Last reply
More about doesnt boot help
  1. Run through this checklist and see if anything on here is your problem

    Also what psu do you have?
  2. LOGISYS Computer 575W ATX12V
    the only thing i didnt try in the checklist is breadboarding to check for shorts. but i doubt it since the sytem was working night before. and it used to make one sound at boot and now nothing ill try everything again step by step when i get home and report my findings. thank you
  3. I wouldn't be surprised if it is the Logisys PSU that fried on you. Cheap power supplies can that sometimes. The first thing I'd do is replace it with a quality PSU like this Corsair 550W PSU.
    If the problem still persists, look for other reasons.
    In fact, even if the Logisys PSU isn't fried, I'd replace it. If nothing else, it is more efficient, and save you a few $$ on the electric bill.
  4. ill keep that in mind, but is it even possible to get all fans and drives working including mobo led with a fried psu?
  5. What also concerns me is why would my cd-roms drives keep trying to open and close and power light on the case keeps blinking in sequence with the cd-rom drives?
  6. The power light is blinking? Are the fans on while this is happening?
  7. Yep the power light on the case and all fans are on cpu,case,psu,and video card fans. mobo light is steady though.
  8. Well, I would still point my finger at the PSU. There will probably be other ideas brought up on what could be causing this, but no one will tell you that the Logisys you have is a very good quality PSU.
  9. so finally i tried going thru checklist and i still nothing. mobo doesnt make any sounds what so ever, while everything seems to power on but it just wont boot. im probably going to go ahead and replace mobo and upgrade psu.
  10. I could have easily missed something though. I'd wait for a few more opinions on the matter.

    If/when you do replace the PSU though, here's my suggestion:
    Corsair 550VX
    $90 ($70 after MIR)

    You could look around for sales to get a power supply for cheaper, in any case, I'd stick with these brands:
    Corsair, PC Power & Cooling, Antec, Silverstone, SeaSonic, Zalman, OCZ.
    Plenty of other decent ones out there, but those are just off the top of my head.
  11. i think ill go with this one OCZ Fatal1ty OCZ550FTY 550W ATX12V from the egg its a bit cheaper but is still reliable, since i hace ocz ram, i like to have as many parts as possible made by the same manufacturer.
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