PC wont boot, just get black screen, but fans etc work?

[writhziden]

I should also have mentioned that your power supply unit (PSU) may have gone out due to the card if it was on its way out or unable to handle the power required by the card plus other peripherals. 400 Watt or greater power supply recommended at ATI Radeon for your card.

Safely do http://www.sevenforums.com/hardware-devices/201055-psu-testing.html#post1688197 using Britton30's tutorial.

From your motherboard manual:

• For a fully configured system, we recommend that you use a power supply unit (PSU) that comlies with ATX 12 V Specification 2.0 (or later version) and provides a minimum power of 400 W.
• Do not forget to connect the 4-pin ATX12V power plug; otherwise, the system will not boot.
• Use of a PSU with a higher power output is recommended when configuring a system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate.
• The ATX 12 V Specification 2.0-compliant (400W) PSU has been tested to support the motherboard power requirements.

 

[Huwey]

If the card was on its way out, or the PSU? Well I asked the shop assistant, and he said it would be okay, as thos particular card, draws power from the motherboard and not the psu. It had no power supply. I mean I tested it out, and watched a few blu ray movies clips. Then, after changing my windows theme, it just went black(the screen), but power was still on.

 

[Huwey]

So after I take the cmos battery out, do I leave the power plug out, or put the power plug back on? The battery is currently out, and I will leave out ALL night, and then replace in the morning, and switch back on, then report back.

 

[writhziden]

Leave the plug out until you replace the battery.

 

[writhziden]

If the card was on its way out, or the PSU? Well I asked the shop assistant, and he said it would be okay, as thos particular card, draws power from the motherboard and not the psu. It had no power supply. I mean I tested it out, and watched a few blu ray movies clips. Then, after changing my windows theme, it just went black(the screen), but power was still on.

If the PSU was on its way out... And the card drawing power from the motherboard could still have overtaxed the PSU. The power in the motherboard has to come from the PSU, so the card is getting its power from the PSU indirectly. The PSU is still a possible source of your problems, but we will tackle that possibility after doing the BIOS reset via the battery removal and reseating.

 

[Huwey]

I re-inserted the battery after leaving it out over night. I still get the "No video input" message on my monitor, however, it seems the internal sounds my comp used to make, when booting up when working, are now restored. It literally seems a case of there being no video sent to the monitor, i think the actual comp is starting up normally.

Another thing I have noticed, which seems like a big discovery, IS...

When I take take the VGA cable out the back of the comp, the monitor displays the message, "check cable connection". THEN as soon as I insert the vga, it says, "No Video Input" and goes into sleep mode. Surely it should be reset to using onboard graphics now, as I left the cmos battery out all night, but I dont know...It seems as though its still searching for the graphics card.

Anyone care to share there thoughts on this? Any help/advice?

Thankyou.

 

[writhziden]

Your BIOS does not have an enable/disable feature for the onboard VGA, so it should always be on unless it was disabled through Windows, but even then, you should see something when the computer first turns on. The fact that before you were not getting the normal sounds suggests it is probably the PSU, but it may still be the motherboard. Only way to find out is borrow a PSU from a friend (at least 400 Watts, but preferably higher) or test your PSU using the method I linked to earlier.

 

[Britton30]

Silly question. Did you connect your video cable to the output on the video card?
If you can't choose which video had priority in BIOS it likely auto-switches to an add-in card when installed, disabling onboard video. A video card does not feed through the motherboard's video output.

 

[writhziden]

I also downloaded a reputable program called watt 2.2.5 to clear my windows non genuine message.

May I ask why you needed to clear this message? I hadn't noticed this until recently when it was pointed out by one of the other, more experienced users, and I would like to clear this up before proceeding further.

 

[Huwey]

Ok, thanks for noticing that. Well the pc is pre-owned, and the previous owner had installed windows 7. It started comimg up with an ugly "non genuine" watermark on the desktop, and prohibited me from having a wallpaper. This program removed this.

 

[Britton30]

No further help, we can only assist Genuine users.

 

[Huwey]

I brought it preowned..I just don't have the key, obviously the previous owner will have. But exteme to end the help due to that. Plus I have more than 1 comp, and they are definitely genuine. Do you carry checks on every person that handles, every component, that its connected to genuine sources? Because that's just abit silly. I would just like help is all

 

[writhziden]

If the product was gifted to you, that would be different, but since your friend retained the key, it violates the SevenForums rules because it violates the licensing agreement between your friend and Microsoft.

Before you respond, make sure you read rule 4 of http://www.sevenforums.com/general-discussion/8-forum-rules-info-please-read.html very closely to understand our position.

What Microsoft won't tell you about Windows 7 licensing | ZDNet
What Microsoft won't tell you about Windows 7 licensing | ZDNet
What Microsoft won't tell you about Windows 7 licensing | ZDNet
What Microsoft won't tell you about Windows 7 licensing | ZDNet

would also be good reading. Links courtesy of JMH