Member Avatar for Khemicol

Hi guys I'm the newbie here. I've searched and read a couple of posts of people with related issues but nothing quite the same as me. Theres a bit of history with this comp so let me begin.

This laptop has been great to me but its been starting to heat up. Well last week it went into SUPER SLOW mode. Even to the point where it doesn't want to do anything. After looking around and seeing how this model has been plauged with heating issues I wouldn't doubt if the Motherboard took a dump. Today I just received a new fan and heatsink from Dell. I do the simple install being very careful not to damage anything. After I was done I went ahead and put everything back together. When I start it up for the first time in about a week, the computer turns on and the fan starts working but I get no display. Only black. When I hook up an external monitor, I still get no display from the external. The comp SEEMS to be ok except for the display. I've read that a new video card might do the trick but I would like to know if this issue may also be related to the motherboard before i start dumping money into new parts.

Thanks,
Khem

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Dani AI

Generated

Brief expert summary and practical next steps based on 's report and 's replacement/salvage suggestion.

Given a machine that powers (fans spin) but shows no video on either panel or external output, common causes are: failed POST (CPU/motherboard), loose or damaged display/LVDS cable or connector, bad memory, or a dead GPU/motherboard. Because the system was recently opened for a heatsink/fan change, a disturbed cable or a missed connector is a high-probability, low-cost fault worth checking before buying major parts.

Recommended diagnostic checklist (work from simplest to more invasive):

  1. Observe POST indicators: speaker beeps, keyboard LED behavior, HDD spin or activity. These hint whether BIOS is starting.
  2. Power-discharge and CMOS reset: remove AC and battery, hold power ~30 seconds, then try booting on AC only. If available, remove the RTC coin cell for a few minutes to clear CMOS.
  3. Minimal hardware boot: remove HDD/optical, leave one RAM module (try each stick and each slot). A no-RAM or single-stick test can produce POST beeps that guide diagnosis.
  4. Check display cabling: inspect the LCD cable at the motherboard and hinge area for a loose connector, pin damage or crushed cable from reassembly. Also confirm the video-out toggle (Fn key) is being used correctly when testing an external monitor.
  5. If POST shows nothing after the above, suspect motherboard/GPU fault. Visual inspection for burned components or swollen caps can confirm physical damage but not always definitive.

Data-salvage and repair economics: for an older Inspiron 5100, a motherboard replacement or professional BGA rework often costs more than a used replacement laptop. Salvaging the 2.5" IDE hard drive with a USB adapter/enclosure and copying data to another computer is a low-cost, high-priority step recommended by .

Caution: follow anti-static practices and do not force connectors. If not comfortable with disassembly, a local repair shop can perform the checks and offer a cost estimate before committing to major repairs.

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Member Avatar for Suspishio

I've been in this game for more than 20 years and I know when "dumping money" is dumping money for poor return.

If you can invest in a new laptop, do so. The HDD can be slaved in a USB enclosure and you'll lose no data.

I know it's not what you want to hear. But face it, first the heat problem, then the display, then your time, then the hassle .....

Member Avatar for Khemicol

How can I go about doing that? I wouldn't know where to begin.

Thanks again.
Khem

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