GA-P55-UD3 won't boot PLEASE HELP!!!

[jknight118]

When powering on i get a single beep then it stays on the gigabyte screen.  I hit tab to go into bios and it takes a while before it goes and allows me to go into bios.  I change boot order to CD, install a windows 7 cd and it does nothing.  Sometimes it will go to the windows 7 splash screen but moves so slow then reboots.  Disconnect hard drives and still goes into bios really slow.  Changed RAM.  I'm stuck

[autotech]

Make sure there isn't any dust build up in PSU cpu cooler and so on. Sounds like ones I have worked on that were overheating. try that first and post back specs of computer with PSU make and model and steps you have already tried also please.

[jknight118]

No dust build up.  Here are the specs:  Intel Core i5-750 Lynnfield Quad-Core 2.66GHz LGA 1156 95W Processor, FirePower ModXStream Pro 500W 80Plus Semi-Modular High Performance Power Supply 600MXSP, GIGABYTE GA-P55A-UD3 LGA 1156 Intel P55 SATA 6Gb/s USB 3.0 ATX Intel Motherboard,XFX HD-465X-ZDF2 Radeon HD 4650 1GB 128-Bit DDR2 PCI Express 2.0 x16 HDCP Ready Video Card,  Western Digital WD Black WD5001AALS 500GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive Bare Drive.

[autotech]

I can only go by what has worked for me so I would try a different PSU first off just borrow one from a friend or at one point I bought one from bestbuy brought it home ruled out PSU and returned it next day. Sure does seem like a heat or power problem but as far as that goes could be ram but usually you can run memtest to rule out memory problems.

[jknight118]

You'll never believe what it was.  I believe a corrupt bios, I called gigabyte and they had me download bios f11 and used q flash to install it.  Once that was done i put the hard drives back in and it booted fine.  Thanks for your help

[autotech]

I am very glad you got it sorted and are up and running.