Member Avatar for TechSupportGeek

I believe it is sort of ironic that my name is TechSupportGeek, since I only seem to be asking questions for the greater part of the last year and a half. :)

Anyway, on to the problem now, during a cold boot, my computer screen starts flickering like crazy at the BIOS boot screen. Then, after a while, it transitions to the Windows load screen, and the flickering stops. From that point on, everything seems to be normal. Except for one thing (dramatic drum roll, please).

The flickering also appears when I move my cursor to turn on the monitor after it has automatically turned off (power saving settings, you know). I'm not talking about sleep mode, just the regular monitor shut off (nice alternative if you don't wish to have a screen saver). Only this time the flickering will not stop until I move my cursor a second time.

The funny thing is I've never experienced such issues in the past, but I guess there is a first time for everything. By the way, in case you're wondering, my computer runs Windows 7 Ultimate x64. If you'd like more information, tell me accordingly so I can know what to provide you with.

Thank you in advance.

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A concise expert summary and a short, prioritized checklist that follows the hints already raised by , , and .

The fact the flicker appears at the BIOS/early-boot stage and the second monitor displays fine strongly favors a problem with the original monitor, its cable/connection, or the monitor’s internal electronics — less likely a Windows driver issue. The “needs a second cursor move to stop” symptom is typical of an intermittent sync/EDID handshake or a power-on timing problem inside the display.

  1. Swap/inspect the cable and input type. Try a different cable and use a digital input (DVI/HDMI/DP) if available. Check for bent pins, loose screws on VGA, and any adapters — analog paths and adapters are common failure points.
  2. Force the monitor input and reset its OSD. Disable auto-input or perform a factory reset from the monitor menu to avoid an errant input-scan loop.
  3. Test the problem monitor on a different PC (not the one with the working screen). Run it through a full cold-boot and a wake-from-display-off cycle to reproduce the fault. Listen for inverter buzz or capacitor noise — those are hardware-failure signs.
  4. Swap GPU outputs or use integrated video. Reseat the graphics card and power connectors. If the BIOS/early-boot flicker moves with a different output, the GPU or its power feed may be at fault.
  5. Driver and Windows power tweaks last. Because the flicker appears before drivers load, try a clean driver reinstall (use a clean-uninstall tool if needed) only after hardware checks. Also test with display power-off disabled to isolate a DPMS/wakeup handshake issue.

BIOS updates (as warned) are a last resort — only consider if the vendor’s release notes explicitly mention display timing or video-output fixes, and follow the manufacturer’s procedure exactly (stable power, correct model, official tool). If the original monitor shows the same behavior on another PC and hardware checks fail, the monitor’s internal electronics (inverter/capacitors/scaler) are likely failing and replacement is usually more practical than repair.

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Member Avatar for caperjack

hi, when you installedwin7 did you install device drivers from the manufacture or just rely on Microsoft drivers ,either way i would check for and install updated video device drivers from the maker

Member Avatar for Rik_

Have you tried another screen?

Member Avatar for TechSupportGeek

I've tried another monitor and it works just fine. It is also noteworthy to say that my original monitor wouldn't let me access to the OS at all, this morning. The BIOS boot screen would try to pop up, but then it would flicker like Hell. Taking into consideration this fact, and the fact that the other monitor works without any problem at all, is it safe to eliminate any driver/OS issues and go on and blame the monitor itself? Lastly, would it be wise to go buy a new monitor as the one I'm currently using is not a spare one (it's my brother's, actually)?

Member Avatar for cguan_77

hi TechSupportGeek, have you check at manufacturer website of your laptop, desktop or motherboard whether they have any update for the BIOS? it could be a BIOS problem.

Note: BIOS upgrading can spoilt the whole computer if you are not sure of what you're doing.

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