Member Avatar for darkeyes

Hi,

I just received a Raidmax I tower with a Biostar U8068 motherboard installed (which has onboard video) from my father. My daughter bought me a V7 19" wide screen TFT LCD monitor. I installed my hard drive, CD R/W and DVD player/burner and everything worked fine. Removed one of the Double sided DIMM's to see who made it and put it back in. When I rebooted the computer, all the LED lights worked, heard a beep, but; no video.

I hooked the new monitor up to this older computer that I'm using now and it works fine; so it's not the monitor that's the problem.

I've gone to the Biostar site and can't seem to find any help/support on this board. Can someone on this site help me figure out what's going on with this computer? Do I need to disable the onboard video? How do I do it when I can't see the monitor? Are there jumpers that need changed? If so which ones? Help!!!

Thanks.
darkeyes

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Onboard video stopped after reseating a DIMM on the Biostar U8068 (reported by ). The board powers, fans spin, and POST beeps occur but no image. Several replies already hit the main points — (cables), (check RAM), (input type), (use a graphics card) and (BIOS/beep behavior). The checklist below arranges those ideas into a safe, ordered diagnostic with a few extra details.

First rule out a signal/cable mismatch: use the exact cable that worked on the other PC, switch the monitor OSD between VGA and DVI, and try both physical ports. If a DVI-to-VGA adapter is involved, confirm it’s an analog-capable adapter (DVI‑I); passive adapters won’t work with DVI‑D outputs. Try a known-good VGA-only monitor if available to remove adapter/EDID complications.

Because the failure followed handling RAM, focus on memory next. With power off and unplugged, remove both DIMMs and test each stick alone in the primary slot (usually the one closest to the CPU). Inspect slots for dust or bent pins, use compressed air, and clean module edges with isopropyl if needed. Note and write down the exact beep pattern at power-on (count shorts/longs); that pattern points to whether POST is stopping on memory, video, or something else.

If memory looks OK, clear CMOS (power off, remove the battery for a few minutes or use the clear jumper, then discharge caps by holding the front-panel power button briefly). Install any known-good add-in graphics card to force external video (many BIOSes prefer add-in cards). If no image returns after these steps and beep patterns persist, the likely failure points are the DIMM slot(s) or onboard video/chipset — motherboard replacement or RMA is the practical next step.

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Member Avatar for TT4Titans

make sure the monitor plug ins a in good.

open the case and make sure that all cables memory any adaptor cards are connected and seated good.

Member Avatar for darkeyes

Thanks for your quick reply. I think I've done all that and still no video. still trying to figure out how to disable the onboard video without video???

Member Avatar for DemonicGoldfish

Only way I know of to disable onboard video is to use a GFX card.

Member Avatar for TT4Titans

If your are using the onboard video connection you don't need to disable it.have you checked the settings on the monitor?

do you have another monitor you can hook to the computer?

Also try hooking the new one to another machine could be the monitor itself.

Member Avatar for David Sanders

Check the ram again, could be a bit of dirt fallen into the ram slot. Happen to me one time when i was cleaning my computer

Member Avatar for fouxyfive

The new TFT LCD monitor, are you using the correct setting on the monitor? Sometimes if you have an digital setting on the monitor and have it plugged in using an analog setting it won't work. Screen would appear to be blank. Also, if you have an older computer that does not have a Digital capable monitor I would suggest you not use an LCD screen, picture would look horrible unless you can upgrade the video card to allow the monitor to accept digital output from the older computer.

Member Avatar for suRoot

your bios is probably set to automatically choose to use a AGP/PCI/-E video card over the on board one (unless you have a Dell (only system bios i know of that does have an auto function)) so if you plug a graphics card in it should work. HOWEVER if you're getting boot error code beeps it could be because that stick of RAM you removed is not back in properly/broken try taking it out again and boot (assuming you have another stick in there) if it doesn't boot with the one stick removed def stick another gfx card in, if that doesn't boot you can try a CMOS reset and if that doesn't work you'll probs need a new mobo

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