Member Avatar for fredrik.b.torsvik

Hi.

After part 1 off installing Windows 8 it asks me to remove installation media (USB stick) and it re-starts.

when its at the windows logo it starts prepering the unit, at 75% the monitor shows this message (no signal detected)

I've tried safe mode, but windows cant complet installing in safe mode. and Im asked to re-start the PC and continue the installation

windows 8 have bean installed on this PC before.

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Brief recap and context: a Windows 8 setup that reaches the “preparing” stage and then the monitor reports “no signal” usually means the system completed POST but video output stopped during the transition from installer to the installed OS. ’s cable check was a sensible quick test and ’s follow-up (hardware contact on the graphics card / memory) points toward marginal connections or power issues rather than a Windows-only fault. The steps below cover common causes and practical checks that often resolve this symptom.

Recommended troubleshooting checklist (power off and unplug mains before handling components):

  • Verify the monitor and cable: try a different cable type (DVI/HDMI/DP), a different monitor, and confirm the monitor input selection.
  • Reseat the GPU: remove the card, inspect the PCIe contacts, reseat until the slot latch engages, and firmly reconnect any 6/8‑pin PCIe power leads.
  • Try integrated video: move the display to the motherboard video output (disable discrete GPU temporarily in firmware if needed) to confirm whether the GPU is the problem.
  • Reseat memory and test modules one at a time: swap slots and run a memory tester (MemTest86) if instability is suspected.
  • Minimal-boot: disconnect extra drives and USB devices, leave only CPU, one RAM stick, GPU (or onboard video) and boot to see if the installer finishes.
  • Clear CMOS/BIOS defaults and, if system is stable, consider a BIOS/UEFI update from the motherboard vendor.

Further diagnostics and notes: check that the GPU fan(s) spin and that the PSU provides stable power (a weak PSU can let the screen go dark when the GPU draws more current). Watch motherboard POST LEDs or beep codes for hardware errors. Some installers switch output or set a mode unsupported by older monitors; testing alternate outputs often reveals this. If the fault is intermittent after reseating, consider replacing the suspect RAM stick or the GPU — marginal contacts often reappear.

Safety and follow-up: handle boards grounded and avoid metal-on-contact cleaning; use compressed air or isopropyl for contacts when required. If installation still fails after hardware checks, recreate the installation USB (corrupt media can also stall setup).

Member Avatar for adebayo.opeyemi.338

HA,IT IS VERY SIMPLE,PUT THE VGA CABLE PROPERLY.

Member Avatar for fredrik.b.torsvik

problem solved!! the Videocard wasnt propperly connected, I also cleaned the RAM

Member Avatar for fredrik.b.torsvik

VGA cable wasnt the problem it was the video card itself or the RAM

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