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Salam

i have hp dv4 core i3 laptop.sometimes back its screen blacked out.i toke it for repair. the guy said its VGA cable is not working.i told him to get the laptop in one piece as it was unscrewed.when he got it screwed that laptop was not able said ill fix it.leave with me.after a day or two i got back to the repair shop and the guy said the motherboard is dead..and if u had not asked to put the laptop in one piece it would have been said the motherboard got grounded and blah.u need to get a new motherboard worth 18000 rs .now is there a way to fix the motherboard?or do i have to get a new one?and whats the price for the board.and any got repair guy in Islamabad?help would be appreciated.Walikum Salam.

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Short, practical checklist and next steps for (and others with a DV4 showing a black screen):

As pointed out, DV-series laptops have a history of graphics-related failures, so start by isolating the fault before paying for a full board replacement. Basic tests you or a shop can do quickly: connect a known-good external monitor (HDMI/VGA) to see if there is any external output; shine a bright light on the panel to check for a faint image (if you see one the backlight/inverter/LVDS cable is suspect); listen for POST beeps, watch power/fan activity and HDD LED for signs the system is POSTing; reseat RAM, HDD and the display cable, and try a power reset (AC off, battery out, hold power 30s).

Repair options and what to ask the technician: if external display works, you likely only need the internal screen/LVDS cable or inverter. If nothing shows externally, the problem is probably on the board (GPU/power rails). Reflow (heat) can temporarily restore BGA solder joints but is not reliable long-term; reballing is more durable but costs significantly and may exceed a replacement-board price on older models. Ask the shop for a written diagnostic, a demo (show the fault), an itemised quote (parts vs labour), and a written warranty on their work.

Practical decisions: get at least one independent second opinion and compare the repair quote to the cost of a used/refurbished motherboard or a replacement laptop. Insist the repairer preserves your HDD (backup your data first) and documents any changes they made. If a technician claims the board was made worse after you asked them to reassemble, request a clear explanation and refuse unexplained charges. If the repair cost approaches the laptop’s market value, selling for parts or replacing the laptop is often the smarter choice.

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Member Avatar for Rik_

The HP DV series laptops are well known for graphics failure. It is down to a combination of poor design and poor manufacturing quality.
If it is still under warranty then get it back to HP as a proper repair can be very very expensive.

Member Avatar for jacquelinelop

w.salam
good discussion for related to motherboard

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