Desktop

Ask something
Discussion Locked

constant power

0 helpful
10 replies

by cybergun35

Closed to new repliesThis discussion is closed. It stays readable, but it takes no new replies.
I am working on a Hp pavilion 6553 w/466 celron 128mb. At first i was have problems getting past the blue splash screen, but after a few try's i can usually get in, Not the case anymore before when i was getting in to where you can select normal mode ,safe mode ,step by step stc.. i would recive and error 0258 previous boot incomplete? but the big problem now is when ever you connect the power cable the pc comes on and the power switch has no affect,and i'm not getting any kind of video signal. If anyone could please giude me i would forever be grateful. ps or iam i fighting a losing battle?

10 replies

by cglrcng9

Let's start here. Turn off & unplug it, open the case and ground yourself to the unpainted portion of the case to equalize ESD). Now unplug the monitor from the video card, remove and reseat the video card.

Reconnect the monitor, plug the unit back in and as the unit begins booting you should at least hear 1 post beep (if you did hear 1 beep on the right track, if more, there's something usually wrong elsewhere), immediately after that beep, press and hold the CTRL key and see if it will boot into safe mode (there will be a Windows Start menu along the way, choose "Safe Mode" from that menu). If you have both video signal now and have been able to reach Safe Mode then simply run a Scan Disk to see if it straightened out your problems by rebooting after it fixes whatever disk error is keeping you from booting properly.

If you still do not have video signal, try a different monitor or video card in that order. Also do make sure your monitor is plugged in and you get a green power light on the monitor. If a yellow light is present instead of green, then a standby lockup is probably the cause (can be a simple CMOS ACPI setting, or can usually be solved by installing another monitor temp. and then switching back after setting the monitor to Standard VGA driver, then re-installing the proper monitor driver for the old monitor).

If all above fails, try the Win98 emerg. startup disk (www.bootdisk.com to download the appropriate 1 if needed), in the A:\ floppy drive, see if you are getting basic DOS drivers and CD drivers to load along w/ the DOS Ramdisk (choose w/ CD Support @ the menu), if so, @ the A:\ prompt type the command "Sys C:" and hit ENTER, wait for the system files to be transferred, then remove the floppy disk & reboot.

Still won't, or still no video, I'd then suggest you find a tech to help in person or e-mail me and I'll see what I can do...But never ever give up....No learning done if you do.

Hope some of the above helps. Good Luck.

by cglrcng9

BTW to transfer those System Files the command is without quote marks. Should look like this;

A:\>SYS C:

Then hit the Enter key. It will start transferring the system files to the C:\ drive. Then it should read;

A:>System Files Transferred

To check to see if the C:\ drive is present, type

C:\ then hit Enter again, it will now read

C:\> Type DIR and it will now read

C:\DIR hit enter, and you should see a list of files and directories that are actually on C:\, at least then you know the partition and the drive along w/ Windows does exist and is readable and reachable from DOS. Take copious notes along the way (write down everything you can, and have tried so far.

Then remove the startup disk from the A:\ drive and reboot.

by cybergun35

Well i gave that a shot but got nowhere, the video card is intergrated. I tryed putting a pci video card in but with the same results still no video and constant power. I also changed mointers still no luck. I was wondering about the jumpers on the motherboard, where i could find how they are set at. Thanks

by cglrcng9

One more thing, I had 1 recently that had a problem w/ the power switch that was similar, plug it in and it would come on. I did a lot to the machine as it was ancient, but a simple BIOS flash upgrade solved that problem and another I was having w/ no USB support(thanks to a couple of guys here I finally found the BIOS flash upgrade on an old forgotten .de ACER FTP board page, THANX Again Guys! And u know who u are), though shutting off the Power Saving features in the CMOS settings also solved the problem before I flashed it come to think of it. You could try the same, but you will need video to change CMOS settings for sure. Can you reach the CMOS BIOS Settings? If so look for "Power Savings Settings"

by thechas

Personally, I suspect that the motherboard is shot.

You can check this by unplugging the leads from the power switch to the motherboard.

If the PC still powers up right away, there is a good chance that the motherboard is your problem.

On an ATX system, all the power switch does is tell the motherboard to tell the power supply to turn on all the way.

How did the MB fail, working on the system with power connected.
On an ATX system, there is ALWAYS 5 volts on some of the motherboard circuitry when the power cord is plugged in.

Changing RAM, plugging in cards or the power connector can all cause a voltage surge that can damage components or the MB itself.

Chas

This discussion is closed to new replies.