HP 280 G2 User Manual

Solving power problems
Common causes and solutions for power problems are listed in the following table.
Power supply shuts down intermittently.
Cause Solution
If equipped with a voltage selector, voltage selector switch on
rear of computer chassis (some models) not switched to correct
line voltage (115V or 230V).
Select the proper AC voltage using the selector switch.
Power supply will not turn on because of internal power supply
fault.
Replace the power supply.
Computer powered o automatically and the Power LED ashes Red two times, once every second, followed by a two second
pause, and the computer beeps two times. (Beeps stop after fth iteration but LEDs continue ashing.)
Computer powered o automatically and the Power LED ashes red four times and then white two times.
Cause Solution
Processor thermal protection activated:
A fan may be blocked or not turning.
OR
The heat sink is not properly attached to the processor.
1. Ensure that the computer air vents are not blocked and the
processor cooling fan is running.
2. Open the access panel, press the power button, and see if
the processor fan (or other system fan) spins. If the fan does
not spin, make sure the fan cable is plugged onto the system
board header.
3. If fan a plugged in and not spinning, replace it.
Power LED ashes Red four times, once every second, followed by a two second pause, and the computer beeps four times. (Beeps
stop after fth iteration but LEDs continue ashing.)
Computer powered o automatically and the Power LED ashes red three times and then white four times.
Cause Solution
Power failure (power supply is overloaded). 1. If equipped with a voltage selector, check that the voltage
selector, located on the rear of the power supply (some
models), is set to the appropriate voltage. Proper voltage
setting depends on your region.
2. Open the access panel and ensure the power supply cable is
seated into the connector on the system board.
3. Check if a device is causing the problem by removing ALL
attached devices (such as hard drives or optical drives and
expansion cards). Power on the system. If the system enters
POST, then power o and replace one device at a time and
repeat this procedure until failure occurs. Replace the device
that is causing the failure. Continue adding devices one at a
time to ensure all devices are functioning properly.
4. Replace the power supply.
5. Replace the system board.
Solving power problems 65

HP 280 G2 Specifications

General

Bus type	QPI
Stepping	D1
Tjunction	100 °C
Processor cache	3 MB
Processor cores	2
Processor model	i3-6100U
System bus rate	4 GT/s
Processor family	Intel® Core™ i3
Processor series	Intel Core i3-6100 series
Processor socket	BGA 1356
Processor threads	4
Processor codename	Skylake
Processor frequency	2.3 GHz
Processor cache type	Smart Cache
Configurable TDP-down	7.5 W
Processor lithography	14 nm
Processor manufacturer	Intel
Processor front side bus	- MHz
PCI Express slots version	3.0
Processor operating modes	64-bit
ECC supported by processor	No
PCI Express configurations	1x4, 4x1
Thermal Design Power (TDP)	15 W
Number of processors installed	1
Configurable TDP-down frequency	0.8 GHz
Maximum number of PCI Express lanes	12
Memory types supported by processor	DDR3L-SDRAM, LPDDR3-SDRAM, DDR4-SDRAM
Memory clock speeds supported by processor	1866, 2133, 1600 MHz
Memory bandwidth supported by processor (max)	34.1 GB/s
Maximum internal memory supported by processor	32 GB
Memory slots	2x DIMM
Internal memory	4 GB
Memory channels	Dual-channel
Memory clock speed	2133 MHz
Internal memory type	DDR4-SDRAM
Memory layout (slots x size)	1 x 4 GB
Ethernet LAN	Yes
Ethernet LAN data rates	10, 100, 1000 Mbit/s
USB 2.0 ports quantity	6
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity	0
HDD speed	7200 RPM
HDD interface	SATA
Storage media	HDD
Optical drive type	DVD Super Multi
Total storage capacity	500 GB
Chassis type	Micro Tower
Product color	Black
Country of origin	China
Audio chip	Realtek ALC221
Product type	PC
Motherboard chipset	Intel® H110
On-board graphics card ID	1916
Discrete graphics card model	Not available
On-board graphics card model	Intel® HD Graphics 520
On-board graphics card family	Intel® HD Graphics
Maximum on-board graphics card memory	1.74 GB
On-board graphics card OpenGL version	4.4
On-board graphics card base frequency	300 MHz
On-board graphics card DirectX version	12.0
On-board graphics card dynamic frequency (max)	1000 MHz
Number of displays supported (on-board graphics)	3
Sustainability certificates	EPEAT Silver, ENERGY STAR
Power supply	180 W
Operating system installed	FreeDOS
Processor code	SR2EU
Processor ARK ID	88180
Processor package size	42 X 24 mm
Supported instruction sets	SSE4.1, SSE4.2, AVX 2.0
Intel Secure Key Technology version	1.00
Intel Stable Image Platform Program (SIPP) version	0.00

Weight and Dimensions

Depth	355 mm
Width	170 mm
Height	358.8 mm
Weight	6110 g