Member Avatar for jaredlet

i recently hooked my old comp (dell dimension L1000R) back up and when i go to start it seems like it is going to boot but stops at a black screen with a blinking - in the upper left corner....no clue even where to begin. i do have an emergency boot disc but couldnt find any options there. any help would be greatly appreciated

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For ’s Dell Dimension L1000R that stops at a black screen with a blinking cursor, the thread has useful ideas from , , , and about memory, drives and OS repair. The notes below give a compact, non-destructive diagnostic flow and a couple of commands to run from a live environment that help decide whether to repair, image, or replace hardware.

First, collect hardware signals before changing anything: does the machine emit POST beeps on power-up, do fans spin and the HDD spin/LED flash, is there any clicking from the drive, and are there visible signs of board/PSU damage (bulging capacitors, burned smell)? These signs separate an obvious hardware failure (motherboard/PSU/HDD mechanics) from a firmware/OS problem and guide what to test next. Always unplug power and follow ESD precautions before touching inside.

If firmware sees the disk, boot a diagnostics/live USB (Linux live CD or vendor diagnostics) to inspect the drive and partitions without writing to it. From a live session, run a SMART health read and list partitions to see if the device responds and files are present. Example commands:

sudo smartctl -a /dev/sda
sudo fdisk -l /dev/sda

If the drive shows failing SMART attributes or bad sectors, image it before further writes using GNU ddrescue and its log file, then replace the drive and restore from that image. Example:

ddrescue -f -n /dev/sda drive_image.img rescue.log

For memory problems run a dedicated memtest (bootable MemTest86) for several passes. If firmware does not detect the disk or the system fails POST with no beeps, focus on PSU/motherboard diagnostics or replacement. These steps prioritize data preservation and factual evidence (POST, SMART, imaging) before any destructive action and build on the practical suggestions already offered in the thread.

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Member Avatar for kccomputerdr

i recently hooked my old comp (dell dimension L1000R) back up and when i go to start it seems like it is going to boot but stops at a black screen with a blinking - in the upper left corner....no clue even where to begin. i do have an emergency boot disc but couldnt find any options there. any help would be greatly appreciated

It could be possible that the bios went bad, but first i'd test it by trying different ram, if that don't work try unplugging one ide cable & rebooting, then the other. that would narrow it down to other problems.

Member Avatar for BILL S

My Pavilion is doing that right now, it was caused by trying the assorted device drivers for the display adapter... I reckoned I had Intel based chips and the drivers are causing odd results.... so far I don't have a good driver to increase the display properties, but restarting has made a difference, I've gotten several results thus far, so not dead yet thankfully. I did have the blinking cursor you mention...at that point, the PC required a reboot... hold the power button until shut down, most PC, regardless of age, allow this, rather then unplug anything.
Bill

Member Avatar for milkweed79

Black screen with the white cursor flashing in the corner usually indicates a master boot sequence failure. Try testing your hard drive on someone's computer. If it's registered by the other computer then your problem lies with your motherboard or RAM. I would suggest a destructive format

commented: thanks for the help and followup +1
Member Avatar for prsrose

Black screen with the white cursor flashing in the corner usually indicates a master boot sequence failure. Try testing your hard drive on someone's computer. If it's registered by the other computer then your problem lies with your motherboard or RAM. I would suggest a destructive format

Same issue--see other threads if needed ;)

I DO get a master boot sequence error-- what does this mean?

The HDD is readable by other computers as external etc...
Did all other suggested troubleshooting: cmos battery etc.

Member Avatar for prsrose

My Pavilion is doing that right now, it was caused by trying the assorted device drivers for the display adapter... I reckoned I had Intel based chips and the drivers are causing odd results.... so far I don't have a good driver to increase the display properties, but restarting has made a difference, I've gotten several results thus far, so not dead yet thankfully. I did have the blinking cursor you mention...at that point, the PC required a reboot... hold the power button until shut down, most PC, regardless of age, allow this, rather then unplug anything.
Bill

Bill-
I'm having this exact problem with my HP--
can you elaborate what you've done so I can try on mine?
I have had a hunch that the display PCI card could be variable...but-- not being able to boot? i dont know.

Any help is appreciated!

Member Avatar for PcTestCard.com

try swap the RAM on different slot.
reseat the HDD cable may help.

if blinking cursor appear before the windows logo, the MBR may be corrupted, just boot to the windows CD, and run the recovery option to fix the MBR problem.

Hope this helps!
Bill

Member Avatar for milkweed79

Yea try a system restore or a recovery. If neither of those work then what you're left with is nothing else than a destructive format. Sorry if this isn't more helpful. But that is the cut and dried. When you can't reverse the problem you have to format

Member Avatar for milkweed79

If you're getting a master boot sequence failure, that means you have corupt or damaged windows systems files. And the fact that it was read my another computer as an external storage device only confirms it. Plug your hard drive back into a working computer and save any and all files you want to keep then do a destructive format on the harddrive

Member Avatar for prsrose

If you're getting a master boot sequence failure, that means you have corupt or damaged windows systems files. And the fact that it was read my another computer as an external storage device only confirms it. Plug your hard drive back into a working computer and save any and all files you want to keep then do a destructive format on the harddrive

Thanks for this.

Strange that this has happened more than once... could be the drive is just not reliable or theres some sort of windows bug?

Will see if I can reformat and reinstall. Already backed up files...

Member Avatar for milkweed79

has it done a check disk right after it show the windows start up screen? I think it would be that your hard drive is losing sectors. Also you have anything magnetic near your tower? I dropped a magnetized screw on top of my hard drive and that gave me the black screen with blinking cursor

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