Member Avatar for kickbok

Hi everyone, i have a little problem.

i was looking at upgrading RAM. i removed one of my 2 512mbs. after examining it, i replaced it, the came 512, in the same slot.

that's all i did, now my system wont boot, no screen, lots of beeps. I've tried booting without ram, without my graphics. all to the same effect.

can anybody give me some ideas on what to do? im at a loss, please help.

thanks,

Ben

dell dimension 5150
2.4Ghz intel dual core
1Gb RAM

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Dani AI

Generated

A concise, ordered checklist for diagnosing a no-video / POST-beep failure after working on memory. The suggestions from (verify BIOS access and seating) and (grounding / discharge) are on target; the guidance below adds a structured workflow and a few checks that are often overlooked.

  • Before powering: unplug mains and discharge residual power; ground yourself. Do a careful visual inspection of DIMM contacts, slot latches, CPU socket area and nearby capacitors for bulging or scorch marks.
  • Minimal-boot method (one clean test each time): motherboard + CPU + single known-good RAM module in the primary DIMM slot + PSU + video (onboard or known-good card). Remove all drives, extra cards and peripherals. Power on and note the exact beep pattern (number, short vs long, pauses).
  • Isolate module vs slot: if a module passes in slot A but not in slot B, suspect the slot or its traces. If no module works in any slot, suspect motherboard/BIOS or PSU rails.
  • If beeps continue, record the pattern precisely and look up manufacturer POST/beep-code documentation for the chassis or chipset (these map specific beep patterns to memory, video, or CPU faults).

Additional checks and cautions:

  • Swap in a known-good PSU or use a multimeter/PSU tester to verify 3.3V/5V/12V rails under load; unstable rails can produce identical symptoms.
  • Memory compatibility: use matched modules (same speed, voltage, rank) and populate the correct slots for dual-channel designs.
  • For stubborn cases, diagnostic POST cards or borrowing known-good components (RAM, PSU, CPU) are faster than buying parts blindly.
  • Keep ESD precautions and avoid forcing modules into slots. When reporting for further help, include the exact beep pattern, motherboard model/service tag, and which single-module tests were tried.

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All 4 Replies

Member Avatar for dos_centavos

Can you get into the BIOS at all to verify the memory is actually installed? I am also assuming you placed the memory back into slot correctly and it is properly seated.

Member Avatar for kickbok

no, no BIOS, the screen dosen't even break from standby.

ive checked the seating a thousand times. the only thing i can think of is the Mobo. *GULP*

am i being rash, or is there anything i can do?

thanks.

Member Avatar for caperjack

no, no BIOS, the screen dosen't even break from standby.

ive checked the seating a thousand times. the only thing i can think of is the Mobo. *GULP*

am i being rash, or is there anything i can do?

thanks.

did you unplug the computer from the power source ,hold the power button in for about 30 seconds to drain power from motherboard ,did you touch the metal case to ground yourself before touching the ram stick.!! if no you could have fried the ram chip ,dose the computer work with just the one stick of ram in that you didn't remove .

Member Avatar for kickbok

ok. problem solved.

thanks everyone for your help. the problem was that the PC couldn't recognise that i re-inserted the ram unit.

i reset the cmos and it let me into bios. changed a few settings back and all is fine and good in the tower again.

thanks for your help anyway.

ps yes, i was grounded to the case, and the ram units are fine. (just purchased 2 more 1 gigs anyway :) )

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