computer restarts abruptly

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A

Ar_Manav

Commendable
Mar 15, 2016
15
0
1,510
i am an architect using sketch up, vray, autocad, photoshop and ms office.....

the system restarts automatically while working or even if its idle... without any notification....
the frequency is not fixed... once in 2-5 hours or even goes well for a week provided my usage remains the same.....

my rig for desktop:
processor : i7 4790-k
MoBo : Ga-Z97x-UD5H
Ram : Corsair Vengence (2x8) GB DDR3
HD: WD Black 1tb
SSD: 120 GB Kingston Now V300
Graphic Card: GTX 660 by Gigabyte (GV-N660WF2-3GD)
PSU: Corsair VS650
Cabinet : Cooler Master C+P 250 model
Monitor : Samsung SE390 model with refresh rate 2 ms

PSU makes no noise or display also does not makes any prior issues....
 
Solution
turkey3_scratch
I do think the PSU is the cause of your problems. For your current specs, a quality 500W unit that meets its labelled wattage is sufficient. For future upgrades, as you said, and I'm not sure what those may be, but a quality 650W unit that meets its labelled wattage could also be good. Here are some options of high quality power supply units you can use:

PCPartPicker part list / Price breakdown by merchant

Power Supply: SeaSonic S12II 520W 80+ Bronze Certified ATX Power Supply ($59.17 @ Newegg)
Total With 10% Tax: $59.17
Total Without Tax: $53.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-03-16 19:24 EDT-0400

PCPartPicker part...
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A

Ar_Manav

Commendable
Mar 15, 2016
15
0
1,510
no....
the system while working on a regular pace just simply restarts....
shuts down and restarts automatically....
no warning.... no sound... no msg... and no error as such
 
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turkey3_scratch

turkey3_scratch

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Jul 15, 2014
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Your PSU is low quality and certainly not one qualified to handle the professional work you do. I would not be surprised if the capacitors are failing in this, causing a lot of ripple and noise spikes on the voltage which in effect can cause these freezes and instabilities.

Your PSU over voltage or under voltage protections are likely shutting itself off to save your PC from getting damaged. I'd advise you replace it.
 
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A

Ar_Manav

Commendable
Mar 15, 2016
15
0
1,510



any recommendations for PSU??? coz i m not a tech savvy.... but a research enthusiast.... so i build my own rig using available market surveys... also the problem started recently.... for the past 1 year there was no such occurrence.....
P.s. the power requirement i calculated was about 550 watss... additional 100 wats to accommodate any new replacement/upgrade/addition to my server.....
 
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A

Ar_Manav

Commendable
Mar 15, 2016
15
0
1,510



thanks a lot buddy... it was another thing i was least aware about.... using that monitor i got many facts clear... i guess i have found a reason

below is the monitor report cut short to important details..... look forward to ur expert views
.........................................................................................................................................................................................................

CPUID HWMonitor Report
-------------------------------------------------------------------------

Mainboard Model Z97X-UD5H-BK (0x0000031F - 0x92A1DD60)

Hardware Monitors
-------------------------------------------------------------------------

Hardware monitor ITE IT8620
Voltage 0 0.24 Volts [0x14] (CPU VCORE)
Voltage 1 3.36 Volts [0xAA] (VCC3)
Voltage 2 11.81 Volts [0xA4] (+12V)
Voltage 3 3.40 Volts [0xAA] (+VCC)
Voltage 5 1.81 Volts [0x97] (CPU VTT)
Voltage 6 1.50 Volts [0x7D] (DRAM)
Voltage 7 3.38 Volts [0x8D] (+3.3V)
Temperature 0 38°C (100°F) [0x26] (TMPIN0)
Temperature 2 34°C (93°F) [0x22] (TMPIN2)
Fan 0 1667 RPM [0x195] (CPU FAN)
Fan PWM 0 0 pc [0x0] (FANPWM0)
Fan PWM 1 0 pc [0x0] (FANPWM1)
Fan PWM 2 0 pc [0x0] (FANPWM2)

Hardware monitor ACPI
Temperature 0 28°C (82°F) [0xBC2] (TZ00)
Temperature 1 30°C (85°F) [0xBD6] (TZ01)

Hardware monitor Intel I/O
Clock Speed 0 598.57 MHz [0x256] (Graphics)

Hardware monitor NVIDIA NVAPI
Voltage 0 0.93 Volts [0x39D] (VIN0)
Power 0 35.04 pc (GPU)
Temperature 0 43°C (109°F) [0x2B] (TMPIN0)
Fan 0 1470 RPM [0x5BE] (FANIN0)
Fan PWM 0 43 pc [0x2B] (FANPWMIN0)
Clock Speed 0 549.00 MHz [0x225] (Graphics)
Clock Speed 1 3004.00 MHz [0x225] (Memory)


Processors
-------------------------------------------------------------------------

Number of processors 1
Number of threads 8

APICs
-------------------------------------------------------------------------

Processor 0
-- Core 0
-- Thread 0 0
-- Thread 1 1
-- Core 1
-- Thread 0 2
-- Thread 1 3
-- Core 2
-- Thread 0 4
-- Thread 1 5
-- Core 3
-- Thread 0 6
-- Thread 1 7

Timers
-------------------------------------------------------------------------

ACPI timer 3.580 MHz
HPET timer 14.318 MHz
Perf timer 3.897 MHz
Sys timer 1.000 KHz


Processors Information
-------------------------------------------------------------------------

Processor 1 ID = 0
Number of cores 4 (max 8)
Number of threads 8 (max 16)
Name Intel Core i7 4790K
Codename Haswell
Specification Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz
Package (platform ID) Socket 1150 LGA (0x1)
CPUID 6.C.3
Extended CPUID 6.3C
Core Stepping C0
Technology 22 nm
TDP Limit 88.0 Watts
Tjmax 100.0 °C
Core Speed 798.1 MHz
Multiplier x Bus Speed 8.0 x 99.8 MHz
Stock frequency 4000 MHz
Instructions sets MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T, VT-x, AES, AVX, AVX2, FMA3, TSX
L1 Data cache 4 x 32 KBytes, 8-way set associative, 64-byte line size
L1 Instruction cache 4 x 32 KBytes, 8-way set associative, 64-byte line size
L2 cache 4 x 256 KBytes, 8-way set associative, 64-byte line size
L3 cache 8 MBytes, 16-way set associative, 64-byte line size
FID/VID Control yes


Turbo Mode supported, enabled
Max non-turbo ratio 40x
Max turbo ratio 44x
Max efficiency ratio 8x
O/C bins unlimited
Ratio 1 core 44x
Ratio 2 cores 44x
Ratio 3 cores 44x
Ratio 4 cores 44x
TSC 3990.6 MHz
APERF 4389.7 MHz
MPERF 3990.7 MHz
IA Voltage Mode PCU adaptive
IA Voltage Offset 0 mV
GT Voltage Mode PCU adaptive
GT Voltage Offset 0 mV
LLC/Ring Voltage Mode PCU adaptive
LLC/Ring Voltage Offset 0 mV
Agent Voltage Mode PCU adaptive
Agent Voltage Offset 0 mV

Temperature 0 51°C (123°F) [0x31] (Core #0)
Temperature 1 51°C (123°F) [0x31] (Package)
Power 0 14.35 W (Package)
Power 1 10.91 W (IA Cores)
Power 2 0.00 W (GT)
Power 3 3.45 W (Uncore)
Power 4 1.28 W (DRAM)
Voltage 0 1.27 Volts (VID)
Voltage 1 +0.00 Volts (IA Offset)
Voltage 2 +0.00 Volts (GT Offset)
Voltage 3 +0.00 Volts (LLC/Ring Offset)
Voltage 4 +0.00 Volts (System Agent Offset)
 
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turkey3_scratch

turkey3_scratch

Expert
Ambassador
Jul 15, 2014
22,630
8
60,960
I do think the PSU is the cause of your problems. For your current specs, a quality 500W unit that meets its labelled wattage is sufficient. For future upgrades, as you said, and I'm not sure what those may be, but a quality 650W unit that meets its labelled wattage could also be good. Here are some options of high quality power supply units you can use:

PCPartPicker part list / Price breakdown by merchant

Power Supply: SeaSonic S12II 520W 80+ Bronze Certified ATX Power Supply ($59.17 @ Newegg)
Total With 10% Tax: $59.17
Total Without Tax: $53.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-03-16 19:24 EDT-0400

PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA 750W 80+ Bronze Certified Semi-Modular ATX Power Supply ($76.98 @ Amazon)
Total With 10% Tax: $76.98
Total Without Tax: $69.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-03-16 19:25 EDT-0400

PCPartPicker part list / Price breakdown by merchant

Power Supply: FSP Group Hydro G 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($98.98 @ Amazon)
Tota With 10% Taxl: $98.98
Total Without Tax: $89.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-03-16 19:26 EDT-0400
 
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Solution
A

Ar_Manav

Commendable
Mar 15, 2016
15
0
1,510



thanks a ton....:)

i have taken a note of it.... but i see the pc temps ate around 100 degree C where as graphic card is just used upto 55% of its efficiency... installing cooling equipment for cabinet and processor.... if still the problem persists would then take a new PSU.... coz the voltage readings for the supply are normal as per a second opinion as well...
thanx a lot buddy
 
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A

Ar_Manav

Commendable
Mar 15, 2016
15
0
1,510
hey guys... i installed cooler master seidon120v processor cooler.... the tems are recorded in a range of 50-60 with internet and my software working... and max of 85 when i use VRAY rendering.... but the system shuts down automatically at irregular intervals or situations... like when the even using the lightest application it restarts...
or when running the system on inverter....

i feel the issues discussed before might be true regarding the PSU.... what are the ideal PSU volatage i can check and compare from HW monitor???
 
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A

Ar_Manav

Commendable
Mar 15, 2016
15
0
1,510




what are the ideal values for voltages i can check from HW MONITOR for the PSU to be faulty???
 
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A

Ar_Manav

Commendable
Mar 15, 2016
15
0
1,510


is S-12G550watts better than S-12II 620 watss in Seasonic???
my Power requirements as per Corsair and other PSU calculators is ranging from 325-480 watts inclusive my expansions... but i was recommended to not go below 550 watts when i built the rig.... and so i choose 650 on safer side

which of the two "S-12G 550watts" or "S-12II 620 watss" is better???

thanx in advance
 
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