Please help me... No signal

What make and model of power supply is in this custom build? What is the maximum current that each of the 12 Volt rails is able to deliver (should be on the label stuck on the power supply?

Cooler master extreme 500W power
Dual 12V rails at 18A each..
All the games i play run fine and it should be more than enough.

Any CPU and or memory overclocking going on?

How is the CPU temperature?

Any error events in the Event Viewer log that might tell you what's happening?

Have you tried to boot up in Safe Mode?

Since you just got that new 5770 did you first uninstall the nVidia video driver and then go BIOS and select PCI-E as your video choice before installing that 5770?

AMD/ATI drivers and nVidia drivers do not work together very well and that may be what is causing your problem.

No overclocking has been done.
I'm not an expert on computers, so i don't know how i can tell if the temperature is fine or not. CPU has been working fine for a while.
This may sound nooby, but event viewer log? What?

Also, no, i'll try doing that now.
Edit : Safe mode does not work either.

I went to add/remove programs and removed nvidia drivers, if that counts.
I had the GT 240 before so i don't think the BIOS thing should be a problem.

Honestly though, would i have to go to a computer shop and get it repaired?

Did this problem occur right after you installed the new video card?

Also you only needed to uninstall the nVida video driver. You will need the other drivers for the M/BD to work properly.

No, not at all.
I had it running for two weeks. Played games like Bioshock 2, Splinter cell conviction, etc.
I was very happy with it.
I torrented Sony Vegas Pro 8 and while i was editing a video, this happened.

So no problem until you installed Sony Vegas Pro 8.

Uninstall that program and see if that helps at all.

Safe Mode would use Microsoft's default VGA driver, not ATI's device driver.

To get to the Event Viewer:

Start => Control Panel => Administrative Tools => Event Viewer then select System

Look for any Error events

But i can't access anything,
I get to the part where it shows the Windows XP logo and the little loading bar below it, then my monitor says "No Signal."

Safe Mode doesn't work either
How can i uninstall the program?

A Repair install of Windows XP seems to be in order.

Will that fix my monitor problem? :S

I agree with ko888 at this point about doing a repair install of XP.

After the Repair Install it should give you the ability to boot into WIndows XP (I hope).

Well, i press "Start Windows normally" and it loads but then it randomly says "No Signal"

Is it a GPU problem?
That is what i'm most concerned about.

It could very well be a GPU problem. Since you can't get into Safe Mode either.

The problem appears to occur just after the video driver is loaded and the video mode is switched from text mode to graphics mode to display the Windows desktop.

My GPU seems to be working fine..
I haven't even put much load on it.

The fan still spins, is there any way i can know for sure?
Should i bring it into a computer repair shop?

If you still have that 240 put it back in your PC.



When you get to this message use your arrow keys to arrow up to Safe Mode near the top of your monitor. Press "Enter".

After you are in safe mode remove the AMD/ATI video drivers and reatart your PC.

If it loads to XP desk top install nVida driver from GPU CD and test to make sure your PC worked as it did before installing the 5770.

If it does then you probably have a defective 5770 that you can RMA if bought new.

A spinning fan on the video card only indicates that the video card is receiving some power it doesn't prove that the GPU (Graphics Processing Unit chip) isn't defective.

It is up to you if you want to bring it to a repair shop or not.

If that was my system I would have first run a Windows XP Repair Install to eliminate a corrupted Windows XP installation as being the problem. If that didn't work I would then test it with a spare video card that I have lying around. I don't know if you have any spare video cards laying around so I can only offer you suggestions as to what I would try.

My radeon 5770 is manufactured by Sapphire, but i have not registered my warranty yet.
Can i do that now?

If your vendor has a time period, like 2 weeks, in which they handle a straight exchange for defective merchandise then I would take that route. If you don't have any consumer protection laws like that then just register your warranty with Sapphire and initiate an RMA request after explaining your problem.

My guess is you have a ATI Catalyst driver problem. I suggest you reboot using safe mode. Remove the video card driver. Reboot again using safe mode and install the latest ATI driver.

Besides GPU failure, what other possible reasons could there be for this?
Thanks.

Corrupt graphics drivers and/or OP/SYS.

Has anyone had experience with Sapphire's customer service?
Also, if i do a RMA, i would have to mail in the deffective one, right?
How long would it take to get a working video card, if mine is defective?

You contact them and go to support .

Usually they want to know what is wrong and will issue an RMA # by e-mail.

They may recommend a carrier and insurance. You pay to ship to them.

After they recieve it and check it out they send a replacement @ their cost to you.

Takes ~ 2 weeks give or take a couple days.

It says when i fill out my warranty, "Date purchased"
I don't remember the exact date, but i remember which month, and could probably find out which week.
Is this a problem?

They are trying to make sure you just did not buy it off eBay from some one else thou with some products that does not matter.

Did you buy it locally or off the internet?

I bought it on a trip to China.

Okay