compaq cq40 charging problem

HP CQ40 Battery Charging Discription

HP CQ40 Charging Description

Laptop battery is charged by external power. Which is uselly output dc voltage and provide power to system and charge battery simultaneously. When battery fully charged continoue supply to system through adaptor and cut battery charging .Every laptop has his own type of configured charging circuit. Charging process is manage by multi controllers like:
• Charging ic
• KBC I/O controller (for battery temperature, level, enable and adaptor detection)
• Battery internal rom chip or external rom u28 (battery must be connected)
First of all system supply B+(main supply source) is available for system startup

Note: for more on B+ Supply Read Article http://www.laptoprefix.com/viewforum.php?f=13

Toshiba bios password removal for latest models

http://www.laptoprefix.com/viewforum.php?f=25 Satellite P100 & Satellite Pro P100 Open Wi-Fi Cover Remove Mini Card Wi-Fi card Locate & Short Out JP8 for 5 Seconds Remove short and turn on NO BOOT Press & Hold Power button to turn off Turn on again & password is cleared Satellite L10, L20, L30 & Satellite Pro L20 Open Wi-Fi Cover Locate & Short Out JP1 for 15 Seconds (Satellite L10) Satellite L20/Pro L20 short out G1 Satellite M100 & Tecra A6 Open Memory Cover Remove Memory Remove Black plastic insulation Locate & Short CMOS CLR1 for 15 Seconds NOTE: All the following models use the same password removal process. Satellite: 17xx Series, 1000, 1110,1130, 1200, 1900, 2430, 3000 P20,P30, P33, A30, A70, A80, M40X, M50,M60, M70, M100 Tecra A3/S2, A5, A6 The jumper is always located under or near the memory modules Depending on the model the jumper could be labelled J1, J2, J5, J7, J9 or CMOS CLR1 (M100 & A6) S...

Dell bios password removal for latest models

RESET Dell Bioses Reset Dell 15R-N5110 Bios Add caption remove motherboard from you laptop. connect power and turn on. short G2201 only one time.its shout down. remove power and assemble your laptop again Then go to bios by press F2. note: This instructions for help only and for professionals only. general users do not try this. Don't short G2201 two times or in even count.it will show you password prompt again. RESET DELL 1545 Bios 1545 mobo with Graphics 1545 without Graphics remove motherboard from you laptop. connect power and turn on. short G49 only one time.its shout down. remove power and assemble your laptop again Then go to bios by press F2. note: This instructions for help only and for professionals only. general users do not try this. 1545 without graphics can be reset only to remove wifi co...

HP/Compaq led errors

HP/Compaq : "The following table illustrates the meaning of blink codes used on some notebooks with EFI environment. The blink or beep codes on your computer may have different meanings. When you contact HP for support, the agent needs to know the model of your computer and may ask you about blinking LEDs or beeping tones to help troubleshoot a startup problem.Meaning of Sample Blink Codes for some EFI Notebooks Number of Blinks or BeepsLocation of Blinking LEDsComponent Being CheckedError Condition Continuous glowBattery power LEDBatteryThe AC adapter is attached and the battery is charging, but does not yet have sufficient charge to power the notebook. 1time---Caps Lock/Num Lock-----CPU------------------CPU not functional 2time---Caps Lock/Num Lock-----BIOS----------------BIOS corruption failure 3time---Caps Lock/Num Lock-----Memory-------------Module error not functional 4time---Caps Lock/Num Lock-----Graphics--------------Graphics controller not functional 5time---Caps Lock/Nu...

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