Rrtc power failure - Toshiba Qosmio G25-AV513 Notebook

Hello Hardyjosef,
Below is the beep code chart for the mini 10 systems.
No POST
If the system does not perform a Power-On Self-Test, there are various things to look for:
1.Check that the system has a power light.
2.If the system has no power light, ensure it is plugged into AC power. Remove the battery.
3.If the system has power but is not performing a POST, Check for one of the following Beep code errors.
Beep Code Description Failure Coverage
1 BIOS ROM checksum in progress or failure. BIOS Chip Motherboard Failure or ROM Error
2 No RAM Detected No Memory Detected
3 Chipset Error (North and South Bridge Chipset, DMA/IMR/Timer Error for Intel platform); Chipset Error Motherboard Failure
Time-Of-Day Clock test failure.
Gate A20 Failure
Super I/O Chip Failure
Keyboard Controller Test Failure
4 RAM Read/Write Failure Memory Failure
5 RTC Power Fail. COMS Battery Failure
6 Video BIOS Test Failure Video Card Failure
7 CPU Cache test failure CPU Failure
8 LCD LCD Failure
4.With the power off and the system unplugged, remove all CRUs from the system and reconnect the AC adapter to the system and try again.
Try reseatting the memory to see if that will resolve the issue. If not, the motherboard may be bad and will need to be replaced. If you need another motherboard you can call the Dell Spare Parts Department at 1-877-717-3355 to purchase one.
Thank You,
Dell-Jesse L
Dell Social Media and Communities

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your description don't have so many details.
GOOGLE IT.

DELL BEEP CODES
Beep Codes Beep Code Description Failure Coverage 1 System Board: BIOS ROM failure System Board, covers BIOS corruption or ROM error 2 Memory No Memory / RAM detected 3 Chipset Error (North and South Bridge Chipset DMA/IMR/ Timer Error for Intel platform); Chipset Error System Board Chipset Failure Time-Of-Day Clock test failure. Gate A20 failure Super I/O chip failure Keyboard controller test failure. 4 RAM Read/Write failure Memory failure 5 RTC Power Fail. CMOS battery failure 6 Video BIOS Test Failure Video card / chip failure 7 CPU Cache Test Failure CPU failure 8 LCD LCD failure

DELL BEEP CODES
Beep Codes Beep Code Description Failure Coverage 1 System Board: BIOS ROM failure System Board, covers BIOS corruption or ROM error 2 Memory No Memory / RAM detected 3 Chipset Error (North and South Bridge Chipset DMA/IMR/ Timer Error for Intel platform); Chipset Error System Board Chipset Failure Time-Of-Day Clock test failure. Gate A20 failure Super I/O chip failure Keyboard controller test failure. 4 RAM Read/Write failure Memory failure 5 RTC Power Fail. CMOS battery failure 6 Video BIOS Test Failure Video card / chip failure 7 CPU Cache Test Failure CPU failure 8 LCD LCD failure

DELL BEEP CODES
Beep Codes Beep Code Description Failure Coverage 1 System Board: BIOS ROM failure System Board, covers BIOS corruption or ROM error 2 Memory No Memory / RAM detected 3 Chipset Error (North and South Bridge Chipset DMA/IMR/ Timer Error for Intel platform); Chipset Error System Board Chipset Failure Time-Of-Day Clock test failure. Gate A20 failure Super I/O chip failure Keyboard controller test failure. 4 RAM Read/Write failure Memory failure 5 RTC Power Fail. CMOS battery failure 6 Video BIOS Test Failure Video card / chip failure 7 CPU Cache Test Failure CPU failure 8 LCD LCD failure

Try holding Fn + End with battery and power cord out and while still pressing Fn + End plug only power cable back in and try to power on.

Power failure as in whole house power failure? Or the computer's power supply failure?
Whole house failure, nothing, the computer will shut off and require rebooting, at which time you may receive a message the computer was not properly shut down, just continue as normal.
Computer power supply failure, same thing, nothing, except the computer will not reboot as the power supply has failed.

1- face down sd ram failure
2 face up dram failure
3 cpu dram failure

check the fuse or check battery

Power Failure Recovery

If the system is disconnected from the AC power it will not operate. Your announcemen and messages are retained in memory during a power failure but you will need to reset the clock. See the instructions on the bottom of the unit. If the message window displays CL, you need to reset the clock. See the instruction on the bottom of the unit.