Dell PowerEdge R750xa EMC Installation and Service Manual - Page 175

System board jumper settings, Disabling a forgotten password

Get Dell PowerEdge R750xa PDF manuals and user guides View all Dell PowerEdge R750xa manuals
Add to My Manuals
Save this manual to your list of manuals

Page 175 highlights

Table 47. System board jumpers and connectors (continued) Item Connector 40. CPU 2 41. 2U[FAN1] 42 . SL1_CPU2_PB1 43. B6, B14, B2, B10, B8, B16, B4, B12 44. NVRAM_CLR 45. PWRD_EN Description Processor 2 Fan 1 PCIe connector 1 DIMMs for CPU 2 channels E, F, G, H NVRAM_CLR (Jumpers) PWRD_EN (Jumpers) System board jumper settings For information about resetting the password jumper to disable a password, see the Disabling a forgotten password section. Table 48. System board jumper settings Jumper PWRD_EN Setting Description The BIOS password feature is enabled. NVRAM_CLR The BIOS password feature is disabled. The BIOS password is now disabled and you are not allowed to set a new password. The BIOS configuration settings are retained at system boot. The BIOS configuration settings are cleared at system boot. CAUTION: Be careful when changing the BIOS settings. The BIOS interface is designed for advanced users. Any change in the setting could prevent your system from starting correctly and you might have potential loss of data. Disabling a forgotten password The software security features of the system include a system password and a setup password. The password jumper enables or disables password features and clears any password(s) currently in use. Prerequisites CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that are shipped with your product. Steps 1. Power off the system and all attached peripherals. Disconnect the system from the electrical outlet, and disconnect the peripherals. 2. Remove the system cover. 3. Move the jumper on the system board from pins 2 and 4 to pins 4 and 6. 4. Replace the system cover. NOTE: The existing passwords are not disabled (erased) until the system boots with the jumper on pins 4 and 6. However, before you assign a new system and/or setup password, you must move the jumper back to pins 2 and 4. Jumpers and connectors 175

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
Table 47. System board jumpers and connectors (continued)
Item
Connector
Description
40.
CPU 2
Processor 2
41.
2U[FAN1]
Fan 1
42 .
SL1_CPU2_PB1
PCIe connector 1
43.
B6, B14, B2, B10, B8, B16, B4, B12
DIMMs for CPU 2 channels E, F, G, H
44.
NVRAM_CLR
NVRAM_CLR (Jumpers)
45.
PWRD_EN
PWRD_EN (Jumpers)
System board jumper settings
For information about resetting the password jumper to disable a password, see the
Disabling a forgotten password
section.
Table 48. System board jumper settings
Jumper
Setting
Description
PWRD_EN
The BIOS password feature is enabled.
The BIOS password feature is disabled. The BIOS password is
now disabled and you are not allowed to set a new password.
NVRAM_CLR
The BIOS configuration settings are retained at system boot.
The BIOS configuration settings are cleared at system boot.
CAUTION:
Be careful when changing the BIOS settings. The BIOS interface is designed for advanced users. Any
change in the setting could prevent your system from starting correctly and you might have potential loss of
data.
Disabling a forgotten password
The software security features of the system include a system password and a setup password. The password jumper enables or
disables password features and clears any password(s) currently in use.
Prerequisites
CAUTION:
Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by
your warranty. Read and follow the safety instructions that are shipped with your product.
Steps
1.
Power off the system and all attached peripherals. Disconnect the system from the electrical outlet, and disconnect the
peripherals.
2.
Remove the system cover.
3.
Move the jumper on the system board from pins 2 and 4 to pins 4 and 6.
4.
Replace the system cover.
NOTE:
The existing passwords are not disabled (erased) until the system boots with the jumper on pins 4 and 6.
However, before you assign a new system and/or setup password, you must move the jumper back to pins 2 and 4.
Jumpers and connectors
175